Tag: botany

Questions Related to botany

Myrmecophily is an association between higher plant and.

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

  1. Bacteria

  2. Fungi

  3. Blue-green algae

  4. Ants

Show answer
Correct Option: D

The vegetation of Rajasthan is

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

  1. Arctic

  2. Alpine

  3. Deciduous

  4. Xerophytic

Show answer
Correct Option: D
Explanation:

Xerophytes are plants of dry habitats, where the environment favours higher rate of transpiration than the rate of absorption. 

In India various parts of Rajasthan and Gujarat show xerophytic plants. Jaisalmer district and surrounding areas of Rajasthan are true deserts.

Which one is not a trait of xerophytes?

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

  1. Thick cuticle

  2. Sunken stomata

  3. Aerenchyma

  4. Well developed mechanical tissue

Show answer
Correct Option: C
Explanation:

Hydrophytes possess special air storage parenchyma tissue, called as aerenchyma. It makes different parts of hydrophytes, light, spongy and flexible. It makes oxygen produced during photosynthesis, available to roots and other non photosynthetic regions. It can also help in exchange of gases with the atmosphere through stomata present in emerged regions of plants. Xerophytes show structural adaptations to discourage water loss through transpiration and increase water absorption. Such adaptations include thick cuticle, sunken stomata, well developed vascular tissue etc.

The waxy surface of floating leaves of the hydrophytes prevents

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

  1. Respiration

  2. Photosynthesis

  3. Transpiration

  4. Clogging of stomata

Show answer
Correct Option: D
Explanation:

Hydrophytes are water loving plants. The hydrophytes with floating leaves have large leaves, stomata and waxy coating on the upper surface. The waxy coating prevent wetting and clogging of stomata.

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

Show answer
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

Show answer
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

Show answer
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

Show answer
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

Show answer
Correct Option: B