Question

Subject: Science
CH-1 NUTRITION IN PLANTS
IMPORTANT TOPICS :- Modes of nutrition in plants, Photosynthesis How nutrients are
in soil.
1) How are nutrients replenished in soil?
2) Explain different modes of nutrition in plants.​

Answer 1

HERE ARE YOUR QUESTIONS :-

1. HOW ARE NUTRIENTS REPLENISHED IN SOIL?
2. EXPLAIN DIFFERENT MODES OF NUTRITION IN PLANTS.

HERE ARE YOUR ANSWERS :-

1. ANS)

Nutrients are replenished by certain different microorganism that are found in thesoil or also by the death of certain plants such as the rhizobium bacteria. The decaying plants tend to slowly break down into the basic soil nutrients over a period of time.

2. ANS)

There are two modes of nutrition :-

1. Autotrophic
2. hetrotrophic

1. AUTOTROPHIC:-

Autotrophic nutrition is a process in which the organism produces their food from the simple inorganic materials such as water, carbon dioxide and mineral salts in the presence of sunlight. ... They make their own food with the help of the water, solar energy, and carbon dioxide by the method of photosynthesis.

2. HETROTROPHIC

Heterotrophic nutrition is a type of nutrition in which organisms depend upon other organisms for food to survive. Heterotrophic organisms have to take in all the organic substances they need to survive. we are also dependent because we also take vegetables and fruits and from animals we take meat, milk, fisheries.

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