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