Ncert- science – class 7-Chapter 1 -Nutrition in Plants 1 Welcome to your Ncert- science - class 7-Chapter 1 -Nutrition in Plants 1 1. What cell part is NOT present in all the cells? Cell Wall Genetic material Cell membrane Cytoplasm None 2. Which life process is classified as autotrophic in some organisms and heterotrophic in others? Nutrition Anaerobic respiration Hormonal regulation Transport None 3. What tool do you use to view the cells? Microruler All of the above Microscope Microlasers None 4. Select the correct statement(s). Heterotrophs are capable of converting carbon dioxide and water into carbohydrates. Heterotrophs utilise solar energy for photosynthesis Heterotrophs synthesise their own food Heterotrophs do not synthesise their own food. None 5. Insectivorous plants usually survive in N2deficient soil Water rich soil N2rich soil Sugar deficient medium None 6. The correct statement(s) among I to III with respect to potassium ions that are abundant within the cell fluids is/are:(i) Along with sodium ions, they are responsible for the transmission of nerve signals.(ii) Potassium plays an important role in maintaining resting membrane potential across the cell membrane.(iii) Potassium is an essential mineral needed to regulate water balance, blood pressure and levels of acidity. I and II only I and III only I, II and III III only None 7. What are outside raw materials used by an organism? Oxygen by all aerobic organisms Food by heterotrophic organisms Carbon dioxide, minerals and water by autotrophic organisms All of the above None 8. The term that is used for the mode of nutrition in yeast, mushroom and bread mould is 9. The association of Rhizobium with Leguminous plants is called__________. Both A and B Parasitic relationship Predatory relationship Symbiotic relationship None 10. The insectivorous plants are____________. partial heterotrophs omnivores partial omnivores heterotrophs None 11. Saprophytes are likely to grow on: All of the above On the ground after rains Bread pieces Pickles when kept in moist places None 12. Identify the part of the cell by the hints given:This part of the cell is present in ALL cells. It is the gel-like substance that provides cell shape. Cytoplasm Chromosomes Nucleus Cell membrane None 13. Which of the following statements is incorrect about leghaemoglobin? It is a Mo-Fe protein. It combines with O2 and protects nitrogenase It imparts pink or red colour to the nodules It acts as O2 scavenger None 14. Leguminous plants are important in agriculture because They have high amounts of proteins They are disease resistant They require less nitrogen for growth Nitrogen fixing bacteria are symbiotically associated in them None 15. Choose the correct answer from the alternatives given. What are the products of photosynthesis Water and carbon dioxide Oxygen and carbohydrate Water and oxygen Carbohydrate and water None 16. Insectivorous plants grow in areas deficient in Iron Sulphur Phosphorus Nitrogen None 17. Which of the following statements is/are correct?i) All green plants can prepare their own food.ii) Most animals are autotrophs.iii) Carbon dioxide is not required for photosynthesis.iv) Oxygen is liberated during photosynthesis.Choose the correct answer from the options below (i) and (iv) (ii) and (iii) (ii) only (i) and (ii) None 18. Organisms which prepare food for themselves using simple naturally available raw materials are referred to as Heterotrophs Autotrophs Parasites Saprophytes None 19. Why are most cells so small? They can reproduce quickly. They can fit in our bodies. We can see them with a microscope. They can take in food and get rid of waste. None 20. Which of the following is true about saprophytes? They trap insects to meet their nitrogen requirement. They share their food and shelter. Saprophytes contain chlorophyll. They live on decaying organic matter. None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
