Why do some plants feed on insects class 7th?

Answer: The insectivorous plants grow in soil which do not contain sufficient nitrogen mineral. These plants (e.g. pitcher plant) are green and carry out photosynthesis to obtain a part of the food required by them. … So, insectivorous or carnivorous plants feed on insects to obtain the nitrogen needed for their growth.

Why do some plants feed on insects?

Question 16

Solution: 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.

Why does a pitcher plant trap insects when it can prepare its own food?

Pitcher plant contains chlorophyll; hence it is capable of preparing its own food like green plants. But pitcher plant eats insects because it grows in swamps or bog areas where the soil is deficient in nitrogen mineral. So, just to fulfill its nitrogen requirement, it traps the insects and utilize their proteins.

What are the conditions required by a seed to germinate?

We know that seeds need optimal amounts of water, oxygen, temperature, and light to germinate. If we don’t create the most optimal environment possible, then plants tend to germinate slowly and unevenly.

IMPORTANT:  Why do mosquitoes bite me and not my boyfriend?

Why do some plants have deep roots?

Function. The plants grow deep roots to gather water that is far down under the surface of the earth. At such a deep level, the water evaporates from the desert heat much slower than it does closer to the surface.

What is a parasite class 7?

Parasites are organisms that depend upon another organism (host) for food and cause harmful effects or dieseases to the host. Examples: Cuscuta (Amarbel), mosquitoes and head lice. saprotrophs are orgnisms that obtain nutrition from dead and decaying organic matter.

Which insects do not feed on plants?

Lacewings insects do not feed on plants.

What is the slowest growing plant?

The slowest-flowering plant is the rare species of giant bromeliad Puya raimondii, discovered at a height of 3,960 m (12,992 ft) in the Bolivian mountains in 1870.

All about pests