Signs of living organisms. Properties of living organisms (grade 5) Work on new material

Khodchenkova Galina Mikhailovteacher of biologyMOU "Zharkovskaya secondary school No. 1" Tver region

Biology lesson in 5th grade

on the topic: “Characters of living organisms”

The purpose of the lesson: generalize and deepen knowledge about living nature; form the concept of characteristics of living organisms.

Lesson objectives:

Educational:

deepen and expand knowledge about the characteristics - properties of living organisms;

continue work on the formation of biological terms.

Educational:

develop independent activity;

the ability to quickly navigate the flow of information: find what you need, comprehend and apply the information received;

teach to identify and justify the most important properties of living organisms.

Educational:

developing the ability to work in a team;

respect the opinions of your comrades, be able to clearly and logically express your point of view and argue for it.

Planned educational results:

personal: explain the characteristic features of living organisms;

meta-subject: be able to work with various sources

information; ability to highlight the main points in a text

subject: identify signs of living organisms, be able to

formulate the concept of “reproduction”, “individual development”, “irritability”

Equipment: educational presentation, exercise book No. 1, information sheets (handouts)

During the classes:

Class organization

Greeting the teacher and students, checking students' readiness for the lesson.

Summing up the studied section “Introduction”

(Knowledge activation, conversation using slides 2-5)

Teacher: guys, we have finished acquaintance with the first section of the textbook “Introduction”, to which we devoted 3 lessons. Before moving on to the next section, let’s summarize.

In previous lessons, we talked about the uniqueness of our planet - planet Earth, in comparison with other planets of the solar system.

Let's remember what makes it unique? ( slide2)

(there is life, it is inhabited by various living organisms)

What shell of the earth do they form? (biosphere) (slide3)

What is the name of the science that studies living organisms? (biology)

- Which living organism is the link between the earth and space? (plants). Prove it! ( slide3-4)

Working on new material

Updating,motivation(on the formulation of the topic and objectives of the lesson)

Teacher: Living organisms are diverse in shape, size, appearance, and lifestyle. However, there are characteristics common to all organisms that distinguish them from inanimate bodies. ( slide5)

Name the signs of living organisms that you know

(nutrition, breathing, movement...).

Teacher: Look at the slide, what signs of living organisms did you not name?

(slide 6)

- Why do you think there are still blank lines left?

(there are some other signs)

- These are exactly what we will talk about in our lesson.

Teacher: guys, formulate the topic and objective of the lesson (write down the topic of the lesson in notebooks)

Teacher: we have the opportunity to expand our knowledge, learn more about the characteristics of living organisms.

Where and how to find out! ( slide 7)

3.2. Independent work studying in pairs.

1. textbook – p.14

2. information sheets (additional material)

3. exercise book No. 1, p. 15 “Working with text”, task No. 1

4. Musicalexercise for the eyes (slide 8-9)

5. The stage of primary consolidation of new knowledge (testing of acquired knowledge, discussion of the completed task)

Teacher: Guys, what other important signs of living organisms have you learned about?

What arguments did the exercise books provide to prove that a car is an inanimate object?

Teacher: How do you imagine such signs of living things as cellular structure? (individual development, reproduction, irritability).

(discussion)

Because These concepts are a little complicated for fifth graders; during the discussion (for a better understanding of biological concepts), slides 10-26 are used

5. Application of new knowledge(slide27)

5.1. Filling out the table “Main characteristics of living organisms” V"

Signs

(with subsequent verification)

1. textbook– p.14 (read)

2. exercise book No. 1,p.31 “Compare and generalize”

5.1. Summing up the work(self-assessment)

Teacher: Give yourself a grade for the work you have done.

Criteria:

If there are no mistakes when performing the work, the lesson was learned “excellently”

Minor mistakes were made, the lesson was learned “well” Mistakes were made, the lesson was learned “satisfactorily”, needs to be improved

7. Information about homework,grading(slide28)

Creative task (optional)

Photo report “Signs of living organisms”

Preparation of questions and assignments on the topic “Characteristics of living organisms” »

8. Reflection (slide29)

Complete the sentence:

During class I worked...

I found out...I managed...I was having trouble...My mood...
Thank you for your attention! See you soon!(slide30)

Bibliography

1. Sukhorukova L.N., Kuchmenko V.S., Kolesnikova I.Ya. Biology. Living organism. Grades 5-6: textbook for general education institutions. - M.: Education, 2012.-14p 2. Sukhorukova L.N., Kuchmenko V.S., Dmitrieva E.A. Biology. Living organism. Exercise book. Part 1.- M.: Education, 2012.-15.31 p. 3. Sukhorukova L.N., Kuchmenko V.S., Dmitrieva E.A. Biology. Living organism. Lesson methodological recommendations. M.: Education, 2012.-15.31 p.

Internet resources

1. tulips , 2. seedling reaction to light 3.mimosa bashful

Question 1. How do plants differ from animals?

Question 2. What signs are characteristic of living organisms?

Living organisms grow, eat, breathe, develop, reproduce, have irritability, and release products of their vital activity (metabolism and energy) into their environment. All living organisms are made up of cells (except viruses).

Question 1. What kingdoms of living organisms do you know?

There are four kingdoms: Bacteria, Fungi, Plants and Animals.

Question 2. What features distinguish living organisms from inanimate objects?

Living organisms differ from inanimate objects in the following features: growth, nutrition, respiration, development, reproduction, irritability, excretion, metabolism and energy, mobility. Inanimate objects do not have such features.

Question 3. What is the importance of the ability of organisms to reproduce for the existence of life on Earth?

If reproduction stops at any stage of organisms, all living things will gradually disappear. This speaks about the interconnection of living organisms. Reproduction carries out the transmission of hereditary information and the continuity of generations. Reproduction allows a population to exist, to continue its species.

Think

Consider Figure 9. What phenomenon is depicted in it and why is it called the “power circuit”? Make your own food chain typical of living organisms living in your area.

This figure depicts the "power circuit" phenomenon. It really looks like a chain of certain links that successively replace each other. Examples:

Sun →grass →hare →wolf;

Sun → tree foliage → caterpillar → bird (tit, oriole) → hawk or falcon;

Spruce → squirrel → marten;

Sun →grass →caterpillar →mouse →viper →hedgehog →fox.

Tasks. Outline your paragraph.

Paragraph outline

§3. Diversity of wildlife. Kingdoms of living organisms. Distinctive features of living things.

Paragraph outline:

1. Kingdoms of living organisms;

2. Differences between living organisms and inanimate objects;

3. Main features of living organisms;

3.1. Cellular structure;

3.2. Chemical composition;

3.3. Metabolism;

3.4. Irritability;

3.6. Development;

When we talk about the differences between living and non-living nature, it is useful to imagine a stone and a cat or a dog. There are differences, and they are obvious. How does science determine them?

TO especially-ben-but-ness of a living being she from-but-sits the following processes that are practically present to all living or-ga-niz-mothers: pi-ta-nie, breath-ha- tion, production, reproduction, mobility, irritability, adaptability, growth and development.

Without a doubt, a stone can be mobile if it is thrown, it can multiply if it is broken, it can even grow if it has Cree -has become such a nature and lives in a saturated salt solution (Fig. 1).

Rice. 1. Actions with stone

This requires external influence, while the stone is unlikely to begin to piss, irritate and sigh from such injustice . In the peculiarities of living and non-living things, they find the same properties of living things, which are no longer with anything re-pu-ta-eat. What are these properties?

1. In the organs and their cells the same chemical elements are contained as in the bodies of inanimate nature. But in the cells of living beings there is also or-ga-no-che-substances, which received such a name, because for the first time you were from living beings, from the or-ga-low- mov. These are proteins, fats, carbons and nuclei. These substances form strong structures (Fig. 2).

Rice. 2. DNA molecule

But only when in a cage do or-ga-no-substances provide manifestations of life. Moreover, the most important role in the life of the or-ga-niz-mov comes primarily from nuk-le-i-no- vym sour-lo-there and white-kam. They ensure the self-mo-re-gu-la-tion of all processes in the organization, its self-mo-re-pro-from-ve-de knowledge, and therefore life itself.

Let’s remember: proteins, fats, carbons and nucleic acids are the main components of life .

2. The main structural and functional unit almost all living orga-nis-movs appear cell. Almost, because on Earth the viruses, which represent a non-cellular form of life, feel great on Earth. In the or-ga-low-mah, in which there are many cells - many-cell-precise, from the cells tissues are formed, tissues are formed there are organs, which in turn unite in the system of organs (Fig. 3).

Rice. 3. Uniting cells into an organ system

Such tenacity of the structure and functions of the or-ga-nis-moves ensures stability and normal pro-te-te- ka-nie life.

3. Metabolism- this is the totality of all chemical reactions, all transformations of substances that enter into an organism from the external environment in the process of drinking and breathing. Bla-go-da-rya about-me-well-substances co-preserve-the-up-to-chen-ness of the processes of life-not-de-I-tel-but- sti-ness and integrity of the or-ga-niz-ma, the stability of the internal environment in the cell and in or-ga-niz-me in general. That is, the exchange of substances and energy ensures a permanent connection between the organism and the environment and the maintenance of its life (Fig. 4).

Rice. 4. Relationship between the body and the environment

4. Multiplication. The living always appears from the living. That’s why the question “What came first: the chicken or the egg?” for general biology neva-wives. In the end, the chicken still reproduces the chicken, and the man still reproduces the human ka. Therefore, life can be considered as the re-creation of similar creatures or the re-production of itself. tion (Fig. 5). And this is a very important property of life, which ensures the continuity of the existence of life.

Rice. 5. Reproduction

5. If you hit a stone, it does not respond and does not react in any way. This trick won’t work with a dog: the predator responds to aggression. Because living beings actively react to the effects of factors in the external environment, manifesting themselves in such a way -zom, irritability. It is the dis-turbability (Fig. 6) that allows the or-ga-niz-mam to ori-en-ti-ro-v-t-sya in the environment and , therefore, survive in the conditions I have created. Even plants that seem to lack movement can react to change nia. Many are able to grow leaves in the direction of a hundred suns in order to receive more light, and some, for example, For example, the leaves curl up if you touch them. This is also a manifestation of dis-ease.

Rice. 6. Irritability

6. Fitness. If you pay attention to the appearance of the zhi-ra-fa, you can see that he is ideally suited to the existence of nyu in the conditions of the African sa-van. A long neck helps him get food where no one can get it, long legs help him run quickly and fight off predators -ni-kov (Fig. 7).

Rice. 7. Giraffe Adaptability

But in Ark-ti-ka the giraffe cannot survive, but white honeys feel great there (Fig. 8).

Rice. 8. Polar bear adaptation

7. We can help sub-sab-be the or-ga-niz for many years, and that’s what it’s called evolution. Evolution is another important property of life.

8. Living or-ga-niz-we are from the same time, most often ne-ra-ti-mo. These are the things they call time.

Development, as a rule, is associated with growth, an increase in body weight or its size, associated -but with the appearance of new cells.

Evolution is also development, but not of one particular orga-niz-ma, but of the entire living world as a whole. Development usually goes from simple to complex and to greater adaptability of the organism to the living environment. nia. This ensures that many living beings that we can observe today.

We examined the differences between living and nonliving nature, and became familiar with the general properties of living organisms. Next time we'll talk about the many types of living beings on our planet and the levels of organiza- tions below -tions of life.

Bibliography

1. Pasechnik V.V. Biology. Bacteria, fungi, plants. 6th grade - M.: Bustard, 2011 - 304 p.
2. Bakhchieva O.A., Klyuchnikova N.M., Pyatunina S.K. and others. Natural history 5. - M.: Educational literature, 2012
3. Eskov K.Yu. and others. Natural History 5, ed. Vakhrusheva A.A. - M.: Balass, 2013
4. Pleshakov A.A., Sonin N.I. Biology. Introduction to biology. 5 grades - M.: Bustard, 2013.

1. Internet portal “Tepka.ru” ()
2. Internet portal “Uchitelbiologii.ru” ()
3. Internet portal “Tepka.ru” ()

Homework

1. What processes are inherent in all living organisms?
2. What is metabolism and what does it contribute to?
3. What is the relationship between development and evolution?

Hello again!

Congratulations on the beginning of the new school year! Fifth grade is a new step towards independence: new teachers, subjects, interests. More lessons means more homework. happy to help again.

We moved to 5th grade. One of the new lessons Biology! My son really liked the subject, he came home from school, gesticulated, explained, said - he couldn’t stop it. Business!)

And why did I look in the notebook?! I felt that happiness was deceptive. The title is highlighted and underlined, carefully written:

Biology - The science of living organisms!

So that! :))

Our first homework is to write down the characteristics of living organisms. I'm happy to publish it!

Basic characteristics of living organisms

1. Breath
2. Nutrition
3. Movement
4. Growth (increase in body size)
5. Development (acquisition of new properties)
6. Reproduction (reproduction of their own kind: acorn-oak, egg-chick)
7. Aging and Dying
8. Excretion (carry out metabolism: plants absorb carbon dioxide, release oxygen, animals - vice versa)
9. Cellular structure (may consist of one or many cells, have organs)
10. Irritability (response to changes in the environment: tree leaves falling, hibernation)

The earth is inhabited by diverse living creatures that are not similar to each other. Despite their different structure and special way of life, they are united by the properties of living organisms. These properties distinguish living matter (all living creatures on the planet) from inanimate nature (mountains, rivers, stones).

Properties

The differences between living nature and inanimate matter are described in detail in the table of properties of a living organism.

Sign	Description
Cellular structure	Living things are made up of cells - the “building blocks of life”. This is the unit of all living things. Life is impossible outside a cell
	The energy necessary to maintain life is extracted from food. Plants are autotrophs and use sunlight, carbon dioxide, and water with minerals as food. The process of creating nutrients inside the body using light is called photosynthesis. The rest of the creatures feed on ready-made substances, i.e. eat other creatures and are called heterotrophs
Metabolism	The scientific name is metabolism. This is the process of extracting useful, nutritious, vital substances from food coming from the external environment. Complex substances break down into simpler ones, from which each cell forms the substances necessary for the body, and also extracts energy and heat.
	It is part of metabolism. Organisms absorb oxygen from the air and release carbon dioxide. Oxygen oxidizes, i.e. combines with other substances and participates in complex biochemical reactions
	Organisms are constantly growing. In multicellular organisms this occurs due to cell division
Irritability	The ability to respond to manifestations of the external environment. For example, flowers close when there is a lack of sunlight, and a person withdraws his hand when it comes into contact with a hot object
Reproduction	Organisms reproduce creatures similar to themselves. This is a complex process that can occur in different ways depending on the complexity of the organization of the body. For example, single-celled creatures divide, plants reproduce by seeds or parts of the body, for the reproduction of mammals two individuals are needed - male and female
	This natural process is the logical conclusion of life. All living beings, regardless of life expectancy, die and decompose, giving food to other organisms

Rice. 1. Cellular structure of organisms.

Living organisms do not live separately from inanimate nature, but actively interact with it. Water and oxygen are nonliving matter, but they are vital substances for living organisms. The interaction of living and nonliving nature through metabolism is called the cycle of substances.

Biological diversity

The general properties of living things are inherent in both unicellular organisms, consisting of just one cell, and complexly organized animals, such as humans. All biological diversity for easy study divided into five kingdoms:

• viruses;
• bacteria;
• plants;
• mushrooms;
• animals.

Rice. 2. Kingdoms of living nature.

Many scientists attribute viruses to inanimate nature. They are on the border of the transition of substances into living form and have the properties of living and nonliving matter. For example, they are capable of reproduction, but do not grow or feed.

Bacteria differ from other single-celled organisms (plants and animals) by the absence of a nucleus, the part of the cell in which hereditary information is stored. Such primitive organisms reproduce by division and have all the signs of life.

TOP 4 articleswho are reading along with this

Plants, fungi and animals are eukaryotes. Their cells have a formed nucleus. Plants differ from fungi in the presence of leaves and the ability to photosynthesize. Mushrooms are not animals, because... They have a special structure and are not capable of active movement.

The animal kingdom is very vast and covers many creatures from single-celled protozoa (amoeba) to mammals (elephant, cat, squirrel), which includes humans.

Rice. 3. Diversity of animals.

All living organisms have the same chemical composition, because... consist of the same elements. Carbon, oxygen, nitrogen, and hydrogen are important for life.

What have we learned?

From the 5th grade biology lesson we learned about the basic properties of living matter, as well as the diversity of life on Earth. The main signs of living things are reproduction, respiration, nutrition, growth. The basis of all living beings is the cell. The entire diversity of living nature is represented by five kingdoms - viruses, bacteria, plants, fungi, animals. Viruses are a transitional form from nonliving to living matter.

Test on the topic

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