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