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