Nutrition and Energy: The Essentials of Autotrophic and Heterotrophic Processes

The video tutorial covers the concept of nutrition, explaining how living organisms obtain and utilize food for energy. It distinguishes between autotrophic and heterotrophic nutrition, detailing the process of photosynthesis in plants and various types of heterotrophic nutrition, including parasitic, saprophytic, and symbiotic relationships. The significance of photosynthesis in linking the physical and biological world is highlighted, along with its role in maintaining ecological balance.

What is the primary source of energy for all living organisms?

• Sunlight

• Water

• Oxygen

• Food

Which process allows green plants to make their own food?

• Fermentation

• Photosynthesis

• Respiration

• Digestion

What are the raw materials required for photosynthesis?

• Minerals and oxygen

• Nitrogen and sunlight

• Carbon dioxide and water

• Oxygen and water

What is the first food product formed during photosynthesis?

• Fat

• Protein

• Starch

• Glucose

How does photosynthesis benefit the ecosystem?

• By reducing sunlight

• By maintaining the balance of oxygen and carbon dioxide

• By converting organic matter into solar energy

• By producing carbon dioxide

Which type of plant obtains nutrients from dead and decaying matter?

• Parasitic plants

• Insectivorous plants

• Symbiotic plants

• Saprophytic plants

What is the role of Rhizobium bacteria in plants?

• They convert atmospheric nitrogen into a soluble form

• They help in photosynthesis

• They absorb sunlight

• They provide carbon dioxide

Which of the following is an example of a parasitic plant?

• Rhizobium

• Nepenthes

• Cuscuta

• Mushroom

Which type of plant traps insects to fulfill its nitrogen requirement?

• Insectivorous plants

• Symbiotic plants

• Parasitic plants

• Saprophytic plants

What is the relationship called when two organisms live together for mutual benefit?

• Parasitism

• Insectivorism

• Symbiosis

• Saprophytism