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