C9-L9-D1-SHIRISHA-BIO-LQ

Multiple Choice

Why is adaptation necessary for survival in desert ecosystems?

• Because deserts have plenty of water

• Because organisms must survive heat and water scarcity

• Because deserts have constant rainfall

• Because no living organisms exist in deserts

Multiple Choice

Which of the following is not typically found in desert ecosystems?

• Opuntia

• Camel

• Baobab Tree

• Hydrilla

Multiple Choice

Why are the leaves of Opuntia reduced to spines?

• To attract animals

• To increase transpiration

• To reduce water loss

• To help photosynthesis

Multiple Choice

Which part of Opuntia primarily prevents transpiration?

• Roots

• Spines

• Flowers

• Fruit

Multiple Choice

Aloe vera survives in deserts mainly because its stem is:

• Thin and woody

• Filled with water-storing tissues

• Covered with hair

• Divided into segments

Multiple Choice

What is the primary function of the swollen trunk of the Baobab tree?

• Store air

• Store water

• Store seeds

• Provide shade

Match

Match the camel adaptation with its function.

• Long eyelashes

• Hump

• Long legs

Prevents sand from entering

Stores fat for energy & water generation

Keeps body away from hot sand

• Prevents sand from entering

• Stores fat for energy & water generation

• Keeps body away from hot sand

Multiple Choice

Camel’s nostrils close during sandstorms because they:

• Help cool the nose

• Reduce entry of water

• Prevent sand from entering

• Help the camel breathe more oxygen

Multiple Choice

Why do many desert animals become nocturnal?

• To avoid predators

• To escape daytime heat

• To find more food

• Because they cannot see in daylight

Multiple Choice

How does the side-winder snake reduce heat gain from the sand?

• By burrowing deep

• By moving sideways with minimal body contact

• By climbing trees

• By jumping over hot surfaces

Open Ended

Compare the desert plant Aloe vera with the cactus Opuntia. Write any two differences based on their adaptations.

Open Ended

State one plant adaptation and one animal adaptation that help organisms survive in the desert.