Tag: life in water

Questions Related to life in water

Which one of the following is correct matching of a plant, its habit and the forest type where it normally occurs


botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Prosopis, tree, scrub

  2. Saccharum, grass, forest

  3. Shorea robusta, herb, tropical rain forest

  4. Acacia catechu, tree, coniferous forest

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Correct Option: A

Plants like Rhizophora and Avicennia grow on the sea shores under saline conditions. For this they have special roots for respiration which are called

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Floating roots

  2. Pneumatophores

  3. Climbing roots

  4. Prop roots

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Correct Option: B
Explanation:

Pneumatophores are specialized root structures that grow out from the water surface and facilitate the aeration necessary for root respiration in hydrophytic trees such as many mangrove species (e.g., Avicennia germinans and Laguncularia raecemosa), bald cypresses, and cotton (Tupelo) gum (Nyssa aquatica). So, the correct option is "B" (Pneumatophores).

Choose the feature not associated with organism found in tropical deserts

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Small body size

  2. Large surface area relative to their volume

  3. Large body extremities

  4. Small surface area relative to their volume

Show answer
Correct Option: A
Explanation:

Tropical desert areas are those where there is scarcity of water and extensive heat. Organisms in those areas adapt to survive in that ecological condition. Adaptations like thorns and succulents in flora helps the plants to survive without plenty of water. The leaves and stems undergo modification to conduct photosynthesis in less available water. Animals like frogs, rabbits, snakes, camels, etc. also go through modification in their characteristics to ensure their survival. Large surface of an any organism can lead to radiation of more body heat per unit of mass which can be fatal. Hence, such adaptations is not seen in organisms present in tropical desert.

So the correct option is 'large surface area relative to their volume'

Cuticle in xerophytes acts as a barrier to evaporation and also the shiny surface reflects heat and so lowers temperature.

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. True

  2. False

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Correct Option: A
Explanation:
The aerial organs in xerophytes are covered, thick, waxy covering called cuticle. The cuticle cuts down water loss in two ways: it acts as a barrier to evaporation and also the shiny surface reflects heat and so lowers temperature.
So, the correct option is 'True'.

Find the correct match.

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Halophyte - Wheat

  2. Xerophyte - Mustard

  3. Geophyte - Tomato

  4. Hydrophyte - Pistia

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Correct Option: D

The sun loving plants are referred to as

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Halophytes

  2. Heliophytes

  3. Heterotrophs

  4. Sciophytes

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Correct Option: B

Green plants are absent in deep sea. Why?

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Light is absent

  2. High pressure

  3. Low temperature

  4. Great depth

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Correct Option: A

Effect of $O _{3}$ in plants, involve:

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Stomata burning

  2. Oxidizing burning

  3. Reduced survival

  4. All of above

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Correct Option: D

Most animals and plants can grow with pH, between

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. 4 and 9

  2. 5 and 9

  3. 6 and 9

  4. 7 and 9

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Correct Option: B

_________ plants have flattened leaf-like stems to carry out photosynthesis.

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Prickly pear

  2. Potato

  3. A & B

  4. None of the above

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Correct Option: A
Explanation:

In Opuntia (prickly pear), the stem is modified to a flattened green structure to perform the function of leaves. Leaf-like flattened modified stems are called phylloclades. 


So the correct option is "Prickly pear".