CBSE Class 4 Science Adaptations in Plants Worksheet Set 01

Answer: (b) Mountain. Conifers such as pine and deodar grow on cold mountains.

Teacher's Note:
1. Conifers are cone-bearing trees.
2. Their slanting branches let snow slide off.

Answer: (d) Tape grass. It lives fully under water and its thin leaves bend easily with the flow.

Teacher's Note:
1. Underwater plants have thin leaves.
2. Pine has needle-like leaves but lives on land.

Answer: (b) Marshy land. Mangrove trees grow breathing roots that stand above the muddy soil.

Teacher's Note:
1. Soil in marshes is full of water and has little air.
2. Breathing roots take in air from outside.

Answer: (a) Water lily. Its leaves float on water, so the stomata are on the side that faces the air.

Teacher's Note:
1. Most land plants have stomata on the lower surface.
2. Floating leaves touch water on the lower side.

Answer: (c) Pitcher plant. It has a jug-shaped leaf that traps insects.

Teacher's Note:
1. It grows in soil that lacks nutrients.
2. Insects give it the nutrients it needs.

Answer: False. Terrestrial plants grow on land; plants that grow in water are aquatic plants.

Teacher's Note:
1. Terra means land.
2. Lotus and water lily are aquatic plants.

Answer: True. The thick green stem of a cactus holds water for the dry desert.

Teacher's Note:
1. Its leaves are changed into spines.
2. This reduces loss of water.

Answer: False. Some desert plants, like the cactus, have shallow roots that spread widely to catch rain.

Teacher's Note:
1. Other desert plants have very deep roots.
2. Both types help the plant get water.

Answer: True. Sharp spines keep animals from eating the plant.

Teacher's Note:
1. Spines are also found on the babool tree.
2. They also reduce water loss in a cactus.

Answer: Terrestrial plants.

Teacher's Note:
1. Mango and banyan are terrestrial plants.
2. Plants in water are called aquatic plants.

Answer: Evergreen plants (evergreen trees).

Teacher's Note:
1. They always look green.
2. Pine is an evergreen tree.

Answer: Cones.

Teacher's Note:
1. Conifers bear cones.
2. Seeds form inside the cones.

Answer: Fungi, such as mushrooms.

Teacher's Note:
1. Fungi have no green colour.
2. They get food from other things.

Answer: In a desert.

Teacher's Note:
1. It has long roots that reach deep for water.
2. It survives in very dry places.

Answer: On land, in plains and warm places (a terrestrial plant).

Teacher's Note:
1. Mango is a terrestrial tree.
2. It needs warm weather.

Answer: Near the sea, along coasts (a terrestrial plant).

Teacher's Note:
1. Coconut grows well in sandy coastal soil.
2. Its fruit can float in water.

Answer: In marshy, muddy places near the sea shore.

Teacher's Note:
1. Mangroves have breathing roots.
2. They grow where land meets sea.

Answer: In ponds and lakes (an aquatic plant).

Teacher's Note:
1. The lotus roots are in the mud below.
2. Its leaves float on the water.

Answer: On cold mountains.

Teacher's Note:
1. Pine is a conifer.
2. Its needle-like leaves lose little water.

Answer: On land in warm plains.

Teacher's Note:
1. Banyan hangs aerial roots from its branches.
2. It cannot grow well in cold mountains.

Answer: Pine and deodar (spruce and fir are also correct).

Teacher's Note:
1. They are conifers.
2. They grow in cold hilly regions.

Answer: Cactus and babool.

Teacher's Note:
1. Spines stop animals from eating them.
2. They are modified leaves or stems.

Answer: Pitcher plant and Venus flytrap.

Teacher's Note:
1. Such plants trap small insects.
2. They get nutrients from them.

Answer: Mushroom and bread mould (yeast is also correct).

Teacher's Note:
1. Fungi are not green.
2. They cannot make their own food.

Answer: In winter, water is scarce and the weather is cold. By shedding leaves, the trees lose less water and save energy until spring.

Teacher's Note:
1. Leaves lose water through stomata.
2. Such trees grow new leaves later.

Answer: The soil is full of water, so there is very little air in it. These trees grow breathing roots that come out of the mud to take in air.

Teacher's Note:
1. Roots need air to stay alive.
2. Mangroves are a good example.

Answer: Their leaves float on the water, so the lower surface is in water. The stomata must be on the upper surface to take in air.

Teacher's Note:
1. Stomata are tiny holes for air.
2. They cannot work under water.

Answer: Long, thin leaves bend easily with the flowing water and do not break. They also take in what they need from the water through their whole surface.

Teacher's Note:
1. Wide leaves may tear in a current.
2. Thin leaves suit life in water.

Answer: No. A banyan needs a warm climate, and the cold and snow of the mountains do not suit it.

Teacher's Note:
1. Plants are adapted to their own climate.
2. Pine and deodar grow there instead.