Ncert- science – class 7-Chapter 1 -Nutrition in Plants 1 Welcome to your Ncert- science - class 7-Chapter 1 -Nutrition in Plants 1 1. Leguminous plants are important in agriculture because They require less nitrogen for growth They have high amounts of proteins Nitrogen fixing bacteria are symbiotically associated in them They are disease resistant None 2. Choose the correct answer from the alternatives given. What are the products of photosynthesis Carbohydrate and water Oxygen and carbohydrate Water and carbon dioxide Water and oxygen None 3. 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 (ii) (ii) and (iii) (i) and (iv) (ii) only None 4. Select the correct statement(s). Heterotrophs utilise solar energy for photosynthesis Heterotrophs synthesise their own food Heterotrophs are capable of converting carbon dioxide and water into carbohydrates. Heterotrophs do not synthesise their own food. None 5. Organisms which prepare food for themselves using simple naturally available raw materials are referred to as Parasites Heterotrophs Autotrophs Saprophytes None 6. Which of the following statements is incorrect about leghaemoglobin? It acts as O2 scavenger It imparts pink or red colour to the nodules It is a Mo-Fe protein. It combines with O2 and protects nitrogenase None 7. 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. Chromosomes Cell membrane Cytoplasm Nucleus None 8. What tool do you use to view the cells? All of the above Microruler Microscope Microlasers None 9. Saprophytes are likely to grow on: On the ground after rains Bread pieces All of the above Pickles when kept in moist places None 10. Which life process is classified as autotrophic in some organisms and heterotrophic in others? Hormonal regulation Transport Anaerobic respiration Nutrition None 11. The insectivorous plants are____________. heterotrophs partial heterotrophs omnivores partial omnivores None 12. 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 III only III only I and II only I, II and III None 13. Insectivorous plants usually survive in N2rich soil Water rich soil Sugar deficient medium N2deficient soil None 14. What are outside raw materials used by an organism? Carbon dioxide, minerals and water by autotrophic organisms Oxygen by all aerobic organisms All of the above Food by heterotrophic organisms None 15. What cell part is NOT present in all the cells? Cell Wall Cytoplasm Cell membrane Genetic material None 16. Why are most cells so small? We can see them with a microscope. They can reproduce quickly. They can take in food and get rid of waste. They can fit in our bodies. None 17. Which of the following is true about saprophytes? Saprophytes contain chlorophyll. They live on decaying organic matter. They trap insects to meet their nitrogen requirement. They share their food and shelter. None 18. The term that is used for the mode of nutrition in yeast, mushroom and bread mould is 19. Insectivorous plants grow in areas deficient in Iron Sulphur Phosphorus Nitrogen None 20. The association of Rhizobium with Leguminous plants is called__________. Parasitic relationship Symbiotic relationship Predatory relationship Both A and B 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.
