Question

D. Very short-answer questions
1. Name the bacterium which lives inside the root
nodules of a leguminous plant.
2. Which chemical compound absorbs carbon
dioxide in the experiment showing carbon
dioxide is needed for photosynthesis?
3. Which part of the pitcher plant is modified in
the form of a pitcher?​

Answer 1

1. Name the bacterium which lives inside the root

• Rhizobium
• Leguminous plants belong to the family Fabaceae.
• These plants have a symbiotic association with the soil bacteria called the Rhizobium, that live in their roots, forming root nodules and fix atmospheric nitrogen into the nitrates and nitrites for the plants and in turn, the plants provide the nutrition to the bacteria

2. Which chemical compound absorbs carbon

• Potassium hydroxide is used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound. Carbon dioxide (CO2) is slightly acidic in nature.

3. Which part of the pitcher plant is modified in

the form of a pitcher?​

• Pitcher plants are the carnivorous plants having modified leaves called as pitfall traps - a prey-trapping mechanism characterized by a deep cavity filled with digestive liquid

Answer 2

Answer:

the surface of the leaves of the plants there are a large number of tiny pores known as stomata or stoma. For photosynthesis green plants take carbon dioxide from the air. The carbon dioxide enters the leaves of the plant through the stomata present on their surface.

Explanation:

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.Pitcher plant derives nutrition just the way any other plant does . It takes water and minerals from the soil and food by photosynthesis. But the soil in which it grows doesn't has nitrogen so it uses the pitcher for killing small insects and then digesting them to derive nitrogen from the animal.The Saracenia produces digestive enzymes through the walls of the pitcher, which break down the insects, extract some of their nutrients, and then the pitcher absorbs those nutrients back through the walls of the pitcher and down to the rhizome to feed the plant.Nepethes generate digestive enzymes they expel into trapped water within the pitcher. This is how they breakdown the trapped bugs into the nitrogen and other nutrients the plant requires. ... So, the bug gets drunk and then can't get a grip. Then it gets digested.

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