Question

E. Very short-answer type questions :
1. What are the two components of lichen?
2. List the conditions necessary for photosynthesis.
3. Name two insectivorous plants.
4. What do you understand by the term "host"?
5. Write the chemical equation of photosynthesis.
6. Which chemical is used to find out the occurrence of photosynthesis?
7. Define the term "autotroph".

Answer 1

Explanation:

1. Lichens are unique, double organisms that consist of two unrelated components, an alga and/or cyanobacterium (photobiont) and a fungus (mycobiont).

2. Plants need three things to perform photosynthesis: carbon dioxide, water and sunlight. Taking in water (H2O) through roots, carbon dioxide (CO2) from the air, and light energy from the sun, plants can perform photosynthesis to make glucose (sugar) and oxygen (O2).

3. Drosophyllum.

Triphyophyllum peltatum.

4. 1 : a person who receives or entertains guests. 2 : a living animal or plant on or in which a parasite lives. host. verb.

5. The equation for photosynthesis states that the combination of carbon dioxide, water and light energy produces a carbohydrate (glucose) and oxygen. The chemical formula is 6CO2 + 6H2O + light energy = C6H12O6 + 6O2

6.;iodine

7. a living thing that is able to feed itself using simple chemical substances such as carbon dioxide

Answer 2

Required Answer:-

1. What are the two components of lichen?

• Two components of lichen are alga and fungus.

2. List the conditions necessary for photosynthesis.

• Some abiotic factors: water, soil, carbon dioxide, sunlight are necessary for photosynthesis.

3. Name two insectivorous plants.

• flytrap and Venus are insectivorous plants.

4. What do you understand by the term "host"?

• A larger organism that harbours a smaller organism is known as host.

5. Write the chemical equation of photosynthesis.

• $\sf 6CO_2 + 6H_2O \xrightarrow{\text{Chlorophyll }} C_2H_{12}O_6 + 6O_2$

6. Which chemical is used to find out the occurrence of photosynthesis?

• Iodine is a chemical used to find out the occurence of photosynthesis.

7. Define the term "autotroph".

• Autotroph refers to the living things which makes their own food using substances like CO2. Ex: Plants.