Question

Discuss
5. Explain the following with the help of an example for each
a parasitic nutrition
b. symbiosis
saprotrophic nutrition
6. Why are manures and fertilizers added to the soil in a farm?
Tistinguish between parasites and partial parasites in plants viving one exam ech​

Answer 1

Explanation:

(a) parasitic nutrition

Answer 2

Answer:

a. parasitic nutrition

Ans : Parasitic mode of nutrition is a heterotrophic mode of nutrition in which organism called as parasite live on the host body surface or inside the body and derive its nutrition from the host.

b.symbiosis saprotrophic nutrition

Ans : When two organisms are in a symbiotic relationship, sometimes both organisms benefit (mutualism) and other times one organism may benefit while another is unaffected (commensalism). ... saprotrophic--The organisms which depend on dead and decaying of matter for the nutrition are called saprotrophic.

why are manures and fertilizers added to the soil in a farm

Ans : Manures and fertilizers help in conserving and enriching the fertility of the soil. By growing plants again and again on the same soil, the soil becomes deficient in nutrients. Thus it is necessary to replenish the soil with these nutrients. That's why farmers add manures and fertilizers to the field.

distinguish between parasites and partial parasites

Parasites :

1. A complete parasites that depends on the host to fulfil all its requirements.

2. depend on the host plant for sugar , minerals , and water

3. Called holoparasitic plants

4. Achlorophyllous (does not contain chlorophyll )

5. EX.  dodder ,broomrape ,and rafflesia etc.

Partial parasites :

1. The parasite that depends on the host for some requirements

2. Photosynthetic and produce their own food , depending on the host for water and shelter.

3. Called hemiparasites plants

4. Chlorophyllous ( contains chlorophyll )

5. EX. castilleja ,mistletoe ,yellow rattle ,etc.

hope it helps

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