Last updated on December 9th, 2023 at 10:02 pm
What are xerophytes?
- Plants that grow in the mountains
- Plants that store water and can live for a long period of time without rain
- Plants that grow in marshy regions
- Plants that have broad leaves to absorb water
Answer: b. Plants that store water and can live for a long period of time without rain
What are conifers?
- Trees that bear flowers
- Trees that do not bear flowers
- Trees that have broad leaves
- Trees that have seeds in their flowers
Answer: b. Trees that do not bear flowers and have seeds in their cones.
What are the adaptations of plants in the rainforest?
- They have narrow leaves to prevent water from staying on them.
- They have small leaves to avoid the harsh sunlight.
- They have broad and abundant leaves to capture sunlight for photosynthesis.
- They have no leaves to reduce water loss.
Answer: C
Why do evergreen trees not shed all their leaves at once?
- They have plenty of sunlight and water throughout the year.
- They do not need to conserve water.
- They do not have enough energy to grow new leaves.
- They are afraid of losing their leaves.
Answer: A
What is the purpose of the drip-tip leaves in evergreen trees?
- To prevent the leaves from rotting.
- To attract pollinators.
- To protect the leaves from herbivores.
- To store water.
Answer: A
What is the reason for the tallness of plants in the rainforest?
- To protect themselves from herbivores.
- To capture maximum sunlight available.
- To conserve water.
- To avoid the harsh sunlight.
Answer: B
What are breathing roots?
- a) Roots that grow deep into the soil
- b) Roots that grow above the soil
- c) Roots that absorb maximum sunlight
- d) Roots that help in photosynthesis
Answer: b) Roots that grow above the soil
Which type of trees grow in marshy regions?
- a) Coniferous trees
- b) Deciduous trees
- c) Mangroves
- d) Coconut trees
Answer: c) Mangroves
What are the adaptations of plants that grow in coastal regions?
- a) Strong and flexible stem
- b) Deep roots
- c) Shiny leaves to reflect sunlight
- d) All of the above
Answer: d) All of the above
What is the method of seed dispersal in coconut trees?
- a) Wind
- b) Animals
- c) Water
- d) Self-dispersal
Answer: c) Water
What are the adaptations of floating plants?
- a) Their roots are fixed in the mud
- b) They have broad and flat leaves
- c) Their bodies are filled with water
- d) Their leaves are waxy and repel water
Answer: d) Their leaves are waxy and repel water
What is the adaptation of fixed plants?
- a) Their roots are loosely hanging
- b) Their leaves are narrow and pointed
- c) Their stems are thick and rigid
- d) Their stomata are present on the upper surface of leaves
Answer: d) Their stomata are present on the upper surface of leaves
Why do the stems of fixed plants need to be flexible?
- a) To bend with the flow of water
- b) To grow taller
- c) To store water
- d) To avoid predators
Answer: a) To bend with the flow of water
Which of the following is a floating plant?
- a) Water lily
- b) Lotus
- c) Duckweed
- d) Rhizophora
Answer: c) Duckweed
What is the purpose of the waxy coating on the leaves of fixed plants?
- a) To attract pollinators
- b) To prevent them from getting affected by strong winds
- c) To prevent them from rotting
- d) To repel insects
Answer: c) To prevent them from rotting
What is the main adaptation in the leaves of submerged plants?
- a) They have stomata on the upper surface
- b) They have small holes in the stems for breathing
- c) They have a waxy coating to prevent waterlogging
- d) They have broad and flat leaves
Answer: b) They have small holes in the stems for breathing
What is the source of carbon dioxide for the submerged plants?
- a) Soil
- b) Sunlight
- c) Air
- d) Aquatic animals
Answer: d) Aquatic animals
How are the roots of submerged plants fixed?
- a) They float on the surface of the water
- b) They are loosely hanging
- c) They are fixed in the soil underwater
- d) They are fixed in the mud at the bottom of the water bed
Answer: c) They are fixed in the soil underwater
