3. They live on trees ...
c) moles, moose, worms.
4. They live in the forest litter ...
c) chanterelles, mushrooms, butterfish.
c) ground squirrel, bustard, roe deer.
Test "Forest - a natural community."
1. The forest is called the natural community because ...
a) in the forest next to each other various plants grow;
b) all the inhabitants of the forest live together, are closely related to each other;
c) the entire forest - from the tops of trees to the ground - is inhabited by animals.
2. In the forest, plants form tiers:
a) the upper - mosses and lichens, the middle - trees, the lower - shrubs;
b) upper - trees, medium - herbaceous plants, lower - bushes;
c) the upper one is trees, the middle one is shrubs, the lower one is grasses, mosses and lichens.
3. They live on trees ...
a) squirrels, woodpeckers, pine forests; b) mice, hares, bears;
c) moles, moose, worms.
4. They live in the forest litter ...
a) hedgehogs, moles, shrews; b) bacteria, insects and their larvae;
in) ladybugs, beetles - bark beetles, forest mice.
5. Edible mushrooms include:
a) fly agaric, bile fungus, false mushrooms; b) raincoats, pale grebe, valui;
c) chanterelles, mushrooms, butterfish.
6. Select a group of animals and plants of the forest community:
a) bell, timothy, clover, bee, quail, corncrake;
b) spruce, pine, birch, raspberry, wild strawberry, cuckoo, woodpecker, elk;
c) wheat, rye, corn, potatoes.
7. Find the animals of our region:
a) sable, tiger, flying squirrel; b) elk, wild boar, beetle - bark beetle;
c) ground squirrel, bustard, roe deer.
8. Which of the animals helps forest litter:
a) hungry animals; b) small animals;
c) those animals that hibernate.
Environmental factors affecting the body.
biotic
abiotic
both answers are correct
What effect does light have on a plant?
growth, flowering, fruiting
seed germination
both answers are correct
Light - environmental factor, which determines the life of plants, most of which are photoautotrophic. The radiant energy of the Sun is the premise of earthly life. Sunlight regulates the growth and development of plants, and can also have a damaging effect. Light is one of the most important factors in the life of a green plant, since it is a source of energy in the process of photosynthesis. It also affects other functions of the plant organism - on its growth, flowering, fruiting , as well as seed germination. The ratio of plants to light is different, according to this sign three groups are distinguished: photophilous, shade-loving and shade-tolerant.
The effect of living organisms on plants.
animals feed, pollinate
darken, use as a support
both answers are correct
Animals feed on plants, pollinate them, carry fruits and seeds. Large plants can obscure young, small. Some plants use others as a support. Microorganisms corrupting plant residues enrich the soil with humus and minerals.
The effect of plants on the environment.
change the composition of air, soil
fix and protect the soil from destruction
both answers are correct
Plants change the composition of air: moisturize it is absorbed by carbon dioxide and emit oxygen. Are changing soil composition - they absorb some substances from it and excrete others into it. Root systems of plants fasten slopes ravines, hills, river valleys, protecting the soil from destruction. Forest planting protect the fields from dry winds.
Characteristic features of photophilous plants.
light affects plant shape
light affects the color of the plant: stem, leaf
both answers are correct
Photophilous plants live only in open sunlit places where there is a rather rare vegetation cover. Light has a great influence on the shape of plants. Growing in the open, usually low, branched, with a wide crown. Photophilous plants have a characteristic structure of leaves. They are usually small, dense, with shiny thick skin and numerous stomata. In many plants, the leaves are covered with wax coating or hairs, which protects them from direct exposure to sunlight. Well-developed mechanical tissue and root system.
Characteristic features of shade-loving plants.
poorly developed mechanical and conductive tissues
leaf blades are fragile and thin. Stomata on the upper and lower sides of the leaf
both answers are correct
Characteristic features of aquatic plants.
slight body surface
powerful root system
no correct answer
Most plants living in water have a very large body surface. They absorb water and substances dissolved in it by the entire surface of the body, and therefore the root system is poorly developed, and sometimes completely absent. There are no stomata on underwater leaves.
Types of plant communities.
forests, meadows, swamps
steppes, tundra
both answers are correct
Vegetation is the totality of plant communities existing in a particular territory. Depending on the prevalence of certain types and conditions of existence, plant communities unite in large groups. Each type of vegetation has its own characteristics, by which it can be distinguished from others. Meadows and steppes - These are thickets of grass knee-high, waist-high, or taller than human height. Some meadow and steppe grasses go from germination to fruiting and death in one season, others in two, and still others live for years and decades. Swamps called the community of plants partially immersed in water and partially protruding from it. They are formed by cereals, sedges, mosses, shrubs. Plants tundra develop very slowly. Tundra plants, as a rule, are stunted - snow covers and bends them. IN deserts where it rains every year, ephemeral communities develop. After spring rains, plants cover the soil with carpet and in 3-8 weeks they manage to grow and bear fruit, and perennials also stock up on nutrients. The size of the ephemera depends on its moisture content - plants that reach 30-39 cm in moisture-rich years and grow up to 3-4 cm in dry years. Some species of desert plants have small, almost invisible leaves or do without them at all - photosynthesis is carried out by the stems . Other plants have large leaves during the wet season and small leaves in the dry season.
Life forms of plants that make up deciduous forest.
first tier: oak, linden, birch
first tier: herbs, bird cherry
first tier: grasses and ferns
Communities of plants do not arise by chance: they develop gradually over many millennia. As a result different types The plants in the community adapt to cohabitation. Layering is most pronounced in forest communities. In the deciduous forest, oaks, linden, birch and other large trees form the first upper tier.
A natural change in plant communities may be caused ...
climate change
soil composition or structure; vital activity of the plants themselves
both answers are correct
A natural change in plant communities can be caused by changes in the climate, the composition or structure of soils, and the vital activity of the plants themselves. Under the influence of these factors, some plants may appear in the community, while others may disappear. In forest communities, vegetation is also changing. Under the canopy birch forest shade-tolerant spruce trees grow beautifully. Years go by. Spruce grows and occupies the upper tier of the forest. Old birches perish. And young photophilous birches cannot survive - there is too little light for them under the spruce crowns. Gradually there is a change of vegetation in the lower tier. Thus, there is a change of birch forest spruce.
The ancestors of the kingdom of green plants.
unicellular algae
bacteria
lichens
1.
2.
3. Sign the tiers of the forest
A red cheat with sharp ears and a long tail, a bird and mouse hunter - this is __________________________________.
5. Listed the types of reservoirs:
6. Finish the sentences:
____________________________________________ grow in the forest, and _________________________________________________ in the meadow. All insects on the body have notches and they have 6 legs. The ant has a notch on its body, which means it is _____________________________________.
7. What kind of natural community there is a speech. Underlinecorrect answer.
a) forest; b) meadow; c) a reservoir.
Surname, first name _______________________________________
Verification work around the world
"Natural communities"
1. Living creatures live in one place and are connected to each other. Such a union of living beings is called _________
_______________________________________________________
2. What does not apply to natural communities?
a) forest; b) meadow; c) soil; d) a reservoir.
3. Sign the tiers of the forest
4. Find out the animal by description:
A small animal with a long thin tail feeds on the field all summer and autumn, hides grain in underground burrows for the winter - this is ________.
5. Listed the types of reservoirs: _____________________________________________________.
6. Finish the sentences:
____________________________________________ grow in the forest, and __________________________________________________ in the meadow. All insects on the body have notches and they have 6 legs. The ant has a notch on its body, which means it is ______________________________________.
Called a forest doctor, rescues trees from insects ________.
7. What kind of natural community are we talking about. Underline the correct answer.
Shrubs and herbaceous plants grow here, many animals live. There are mushrooms here.
a) forest; b) meadow; c) a reservoir.
A wonderful carpet of grass spreads around. Above the flowers - butterflies flutter silently, bees and bumblebees buzz:
a) forest; b) meadow; c) a reservoir.
a) forest; b) meadow; c) a reservoir.
Peas, Beans, Peanuts - _____________________________________
| Starfish |
10.
Listed fruit crops that grow in the garden: ________________________________________________________________________________________________________.
A wonderful carpet of grass spreads around. Butterflies flutter silently above the flowers, bees and bumblebees buzz:
a) forest; b) meadow; c) a reservoir.
This is an amazing house inhabited by numerous residents who have adapted to life in or near the water:
a) forest; b) meadow; c) a reservoir.
8. Write down the names of the field crop groups:
Wheat, rye, buckwheat, rice, corn - _______________________
Peas, Beans, Peanuts - ______________________________________
Pumpkin, cabbage, potatoes, eggplant, carrots - _________________
Sunflower - ____________________________________________
Flax, cotton - ___________________________________________
9. Arrows connect the habitat with animals and plants:
| Starfish |
10. The plot of land occupied by fruit crops is __________.
Listed fruit crops that grow in the garden: __________________________________________________________________________________________________________________.
Biology test Natural communities for students in grade 6 with answers. The test consists of 2 options in each of 8 tasks.
1 option
1. Natural community form located on the same territory
1) stumps of fir
2) cars
3) volcanoes
4) living organisms
2. All kinds of interactions between the natural community and the environment are
3. Organisms that carry out the process of photosynthesis in an ecosystem are called
4. The remains of dead bodies and excretions of living organisms feed on
5.
A. Animals in the ecosystem are able to exist apart without other living organisms.
B. Bird species of deciduous forest differ from the species of birds living in the steppe.
1) only A is true
2) only B is true
3) both judgments are true
4) both judgments are wrong
6.
Destroyers of organic matter and living bodies in the natural community include
1) bacteria
2) algae
3) soil worms
4) predatory animals
5) mushrooms
6) flowering plants
7. Establish a correspondence between the organism and its role in the ecosystem.
Organism
1. Spruce
2. The fox
3. The mouse
4. Birch
5. The Frog
Role in the ecosystem
A. Manufacturers
B. Consumers
8. Establish the correct sequence of links in the broad-leaved forest food chain.
1) eagle owl
2) linden
3) finch
4) butterfly
Option 2
1. An example of a natural community is
1) landfill
2) petrol station
3) moss bump
4) treatment plant
2. A system of complex relationships between a community of living organisms and the environment represents
3. Herbivores and carnivores living in the ecosystem belong to the group
4. The nutritional relationships that are established between organisms in a community are
1) ecosystem
2) biogeocenosis
3) power circuit
4) factors of inanimate nature
5. Are the following statements true?
A. All living organisms in a community influence each other.
B. Nutrition networks in the ecosystem are more extensive than nutrition chains.
1) only A is true
2) only B is true
3) both judgments are true
4) both judgments are wrong
6. Choose three valid statements.
The group of consumers in the ecosystem includes
1) buttercup
2) hare
3) the bear
4) spruce
5) owl
6) the grave-beetle
7. Have a correspondence between the body and its role in the ecosystem.
Organism
1. Bacteria of decay
2. Soil worms
3. Viper
4. Squirrel
5. Magpie
Role in the ecosystem
A. Consumers
B. Destroyers
8. Install the correct sequence of links in the power circuit.
1) wolverine
2) earthworm
3) leaf litter
4) mole
Response to Biology Test Natural Communities
1 option
1-4
2-1
3-2
4-3
5-2
6-135
7-ABBAB
8-2431
Option 2
1-3
2-1
3-2
4-3
5-3
6-235
7-BBAAA
8-3241