Question

Mode of nutrition in yeast, mushroom and bread-mould is saprophytic.
A. True
B. False

Answer 1

Hint: The bread mould, yeast and mushrooms take a saprophytic mode of nutrition. They acquire the energy from the dead and decaying organic matter. The organisms that obtain the energy from these dead and decaying organisms are known as saprophytes. Organic matter is the principal source of energy in this food.

Complete answer:
Option A True: Saprophytes are the living organisms i.e., live and feed on dead and decaying organisms. It is important in soil biology. They break down the complex organic matter into simpler substances that are used by the plants for various metabolic activities. Therefore, saprophytes play an important role in the ecosystem. Thus yeast, mushroom and bread-mould are saprophytes.
Option A is correct.
Option B False: This is not the appropriate option because yeast, mushroom and bread-mould are saprophytes. They obtain the energy from the dead organic matters.
So, option B is not correct.

Hence, Option A is the correct answer.

Additional information:
Features of saprophytes:
1. Saprophytes produce pores and filaments.
2. They are mostly unicellular organisms.
3. They don’t have stems, roots or leaves.
4. Absence of chlorophyll saprophytes can’t conduct photosynthesis. Therefore, they depend on food from other sources to survive.
5. They are ameboid.
6. Modes of reproduction in this are usually take place by division or sexual or asexual formation of pores.

Note:
Saprophytes live on decaying things such as sticks, logs and leaves. They can be found in the environment. Saprophytes always digest and breakdown the organic matter through the digestion process, they always take extracellular digestion.