During photosynthesis, the oxygen in glucose is from?

• (a) Water
• (b) Carbon dioxide
• (c) Both from CO₂ and water
• (d) Oxygen in air

Consider the following statements.

• A. Almost all animals are either herbivores or carnivores.
• B. Human beings, rats, crows, etc. are omnivorous.
• C. Holozoic mode of nutrition is seen in Amoeba and Paramecium.
• D. Lysosome involved in the digestion of engulfed food is seen in the contractile vacuole of Amoeba.

Which of the above statements are incorrect?

• A. A, C and D
• B. A, B and D
• C. A and D
• D. B and D

Does pure water conduct electricity?

• A. Yes
• B. No
• C. Sometimes
• D. none of the above

Vermi-processing toilet is beneficial because

• a) It reduces the diseases
• b) It increases soil fertility
• c) Both a and b
• d) It reduces electricity

Question answers of class 7 reproduction in plants