Answer the following questions:
1. Name any two insectivorous plants.
2. Why do some plants eat insects?
3. How are nutrients replenished in the soil?
4. How does the pitcher plant catch its prey?
Answers
Answer:
1. Name any two insectivorous plants.
ans. Venus flytrap, several types of pitcher plants.
2. Why do some plants eat insects?
ans. Most plants absorb nutrients through their roots from nutrient-rich soil. Since carnivorous plants grow in nutrient-poor areas they eat insects to get the nutrients they need.
3. How are nutrients replenished in the soil?
ans. (1) Nutrients are replenished in the Soil by adding Fertilisers and manures.
--> Fertilisers and manures contain plant nutrients such as nitrogen, phosphorous and potassium, etc. So, when fertilisers and manures are added to the soil in the fields, then the soil gets enriched with nutrients like nitrogen, phosphorous and potassium, etc.
(2) Nitrogen Can be Replenished in the Soil by Growing Leguminous Crops.
4. Pitcher plants are several different carnivorous plants which have modified leaves known as pitfall traps—a prey-trapping mechanism featuring a deep cavity filled with digestive liquid. ... The plants attract and drown their prey with nectar.
Answer:
1) Venus flytrap, Bladderwort
2) Insectivorous plants trap insects because they grow in soil which is usually thin and is also poor in nutrients, so they eat insects to fulfil their nutrient requirement.
3) Nutrients in the soil are replenished by adding fertilisers and manures.
4) Inside the pitcher; there are several hair-like structures. These hairs direct the trapped insects downwards. When an insect sits on the pitcher of the plant, the lid closes and the insect gets trapped inside the pitcher. The insect is then digested by the enzymes secreted by the cells of the plants.
Explanation:
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