Chapter 7: Adaptation of Plants in Different Habitats

The following is the classification of plants by habitat except?

• Mesophytes

• Hydrophytes

• Saprophytes

• Xerophytes

Diagram shows a hydrophyte. Which of the following adaptations help the plant to float?

• Broad leaves

• Aerenchyma tissues

• Guard cells

• Succulent stem

What is an adaptation of xerophytic plant?

• Large air spaces

• A large number of stomata

• Leaves have modified into thorns

• Poor root growth

Which of the following cause the highest rate of transpiration in well-watered mesophytes?

• Windy, cool, high humidity, bright sunshine

• Windy, hot, high humidity, cloudy

• Still air, hot, high humidity, bright sunshine

• Windy, hot, low humidity, bright sunshine

Which of the following is an adaptation found in a plant lives in high salt content?

• Thick and succulent leaves

• Stomata that open during the night

• Thin and waxy cuticle

• Ability to shed leaves

Which of the following can be classified as mesophytic plants?

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The diagram shows the adaptation of plant roots to a habitat. Which of the following is NOT a characteristic of root adaptation of the plant to adapt to environment conditions?

• Provides support to survive in soft and muddy soil

• Prevent plants from falling due to strong winds

• Plant root's cell sap has lower salt content than seawater

• There are lenticels on the roots

Which of the following is an adaptive characteristic of a floating plant to carry out photosynthesis?

• The leaves are small and thick

• The stoma is scattered mostly on the lower epidermis of the leaves

• The upper epidermis of the leaves is covered with waxy cuticles that are waterproof

• Plant stems composed of sclerenchyma tissue

The following are the importance of thorns on xerophyte plants except ....?

• Reduces the amount of surface exposed to the sun

• Reduces water loss

• Increase the total number of stoma

• Helps collect dew for water supply purposes

Why do halophytes and xerophytes have sunken stomata?

• To increase the rate of gas exchange

• To reduce the rate of transpiration

• To increase the rate of photosynthesis

• To reduce the plant temperature