Some organisms live together and share shelter and nutrients. Thus, both the organisms involves benefit from each other. This is called symbiotic relationship.

Plants that make their own food are called autotrophs.

Yes, Chlorophyll is vital for photosynthesis. It  allows plants to absorb energy from light. Thus, photosynthesis cannot take place in the absence of chlorophyll.

Some plants do not get all the required nutrients from the soil in which they grow. The Pitcher plant is insectivoroui because it gets nutrients like nitrogen from the insects.

The presence of starch in leaves indicates the occurrence of photosynthesis. This statement is correct.

Cuscuta or amarbel lacks chlorophyll and cannot manufacture its own food. It climbs on other plants to derive nutrition from them. Since it deprives the host of valuable nutrients, it is called a parasite.

Yes, it is correct. The mode of nutrition in which organisms take in nutrients in solution form from dead and decaying matter is called saprotrophic nutrition. Plants which use saprotrophic mode of nutrition are called saprotrophs. The mushroom is a saprotroph.

Bread yeast and fungi secrete digestive juices on the dead and decaying matter and convert it into a solution. Then they absorb the nutrients from it. This mode of nutrition in which organisms take in nutrients in solution form from dead and decaying matter is called saprotrophic nutrition.

Carbon dioxide from air is taken in through the tiny pores present on the surface of the leaves. These pores are surrounded by ‘guard cells’. Such pores are called stomata.

Algae contain chlorophyl, which gives them the green colour. Algae can also prepare their own food by photosynthesis.

Leaves are the food factories of plants. The synthesis of food in plants occurs in leaves.

Wheat cannot fix nitrogen from soil or air. Thus, it needs extra nutrition from fertilizers.

This is correct. Plants have chlorophyll. Soil contains the nitrogen that helps during photosynthesis. Air has carbon dioxide. Sunlight required by the plants during photosynthesis is availaible during day.

Fungi reproduce using spores that germinate and grow into a new fungus. Heterotrophic plants do not have chlorophyll  and cannot produce food by photosynthesis. Both statements are correct.

Mistle-toe is partially parasitic. The algal and fungal partners in lichen are symbiotic. Dodder is a parasite.