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