Question

2. Rhizobium bacteria can directly
convert atmospheric nitrogen into nitrate.
3. Dodder is a total parasite.
4. Some plants are heterotrophic and
depend on others for food.
5. Iodine solution is used to test the
presence of fats.​

Answer 1

Answer:

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Question 2.

Rhizobium is a bacterium found in soil that helps in fixing nitrogen in leguminous plants. It attaches to the roots of the leguminous plant and produces nodules. These nodules fix atmospheric nitrogen and convert it into ammonia that can be used by the plant for its growth and development.

Question 3.

Cuscuta (Dodder) plant is an obligate or total stem parasite. It lacks chlorophyll and has no connection with the soil after the seeding stage. ... The parasitic plant pierces the stem and sucks the nutrients from the host plant.

Question 4.

Plants, algae and few bacteria are said to be autotrophic as they are able to prepare their own food, with the help of sunlight, air, and water. ... are said to be heterotrophic as they cannot prepare their own food and depends directly or indirectly on others for their nutrition.

Answer 2

Answer:

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Explanation:

2. The bacteria which can convert atmospheric nitrogen into nitrites and nitrates are :

RHIZOBIUM, CLOSTRIDIUM, and AZOTOBACTER.

3. Cuscuta (Dodder) plant is an obligate or total stem parasite. It lacks chlorophyll and has no connection with the soil after the seeding stage. ... The parasitic plant pierces the stem and sucks the nutrients from the host plant.

4.Plants, algae and few bacteria are said to be autotrophic as they are able to prepare their own food, with the help of sunlight, air, and water. ... are said to be heterotrophic as they cannot prepare their own food and depends directly or indirectly on others for their nutrition

5.False -  Iodine solution is used to test the  presence of starch