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12th Standard English Medium Biology (Botany) Subject Principles of Ecology Creative 3 Mark Questions with Solution Part - I

Published on: 22/06/2021

QB365 provides detailed and simple solution for every Creative Questions in class 12 Biology Subject. It will helps to get more idea about question pattern in every Creative questions with solution.

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Std: 12th Standard - Biology

chapter: - Creative Questions

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Questions:

Generic 3

5 x 3 = 15

In the picture given below, A and B represents the two different biomes. What does the letter C denotes? What will be its impact on the organisms in C. Explain with example.

Being a tropical country, India is the largest producer of delicious mangoes. These mango tree don't grow in temperate countries. Give reason.

Mention any two species that exhibits protective mimicry.

Direction of mountain determines the richness of vegetation - Justify.

What are the adverse effects of temperature on plant?

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Answers Key:

Generic 3

5 x 3 = 15

The letter C denotes Ecotone - a transition zone between two different ecosystem. Those species found in the ecotone will have impact of environment of two habitats. E.g. Owl in the ecotone area between forest and grassland.

Mango tree show very narrow range of thermal tolerance. Hence they cannot grow in temperate countries.

(a) Carausium morosus (Stick insect)
(b) Phylliumfrondosum (Leaf insect).

North and south faces of mountain or hill possess different types of flora and fauna because they differ in their humidity, rainfall, light intensity, light duration and temperature regions. The two faces of the mountain or hill receive different amount of solar radiation, wind action and rain. Of these two faces, the windward region possesses good vegetation due to heavy rains and the leeward region possesses poor vegetation due to rain shadows (rain deficit).

1. Temperature affects the enzymatic action of all the bio-chemical reactions in a plant body.
2. Low temperature with high humidity can spread diseases to plants.
3. The varying temperature with moisture determines the distribution of the vegetation types.