1. Nutrition in Plants Class 7 Science [LATEST] Solutions Additional long-Answered Questions in English - CBSE Study
NCERT Solutions for Class 7 Science are carefully prepared according to the latest CBSE syllabus and NCERT textbooks to help students understand every concept clearly. These solutions cover all important 1. Nutrition in Plants with detailed explanations and step-by-step answers for better exam preparation. Each Additional long-Answered Questions is explained in simple language so that students can easily grasp the fundamentals and improve their academic performance. The study material is designed to support daily homework, revision practice, and final exam preparation for Class 7 students. With accurate answers, concept clarity, and structured content, these NCERT solutions help learners build confidence and score higher marks in their examinations. Whether you are revising a specific topic or preparing an entire chapter, this resource provides reliable and syllabus-based guidance for complete success in Science.
Class 7 English Medium Science All Chapters:
1. Nutrition in Plants
4. Additional long-Answered Questions
1. Nutrition in Plants
Ques1:- Give a brief description of the process of synthesis of food in green plants.
Ans:- The process of synthesis of food in green plants is known as photosynthesis. In which green plants take CO2 and water as a raw material. This process occurs in presence of chlorophyll which is a green pigment. Plants store synthesised food in leaves.
Ques2:- What are insectivorous plants?
Ans:- The insect is digested by the digestive juices secreted in the pitcher. Such insect-eating plants are called insectivorous plants.
Ques3:- From where do the plants obtain nitrogen?
Ans:- Soil has certain bacteria that convert gaseous nitrogen into a usable form and release it into the soil. These soluble forms are absorbed by the plants along with water.
Ques4:- What is so special about the leaves that they can synthesis food but other parts of the plant cannot?
Ans:- Because the leaves have a green pigment called chlorophyll.
Ques5:- What is photosynthesis?
Ans:- The process by which green plants make their food from water and carbon dioxide in presence pf sunlight is called photosynthesis.
Ques6:- What is Saprotrophic mode of nutrition?
Ans:- The mode of nutrition in which the organisms take in nutrients in solution form from dead and decaying matter is called Saprotrophic mode of nutrition.
Ques7:- What is autotrophs?
Ans:- Organisms that can make their own food are called autotrophs or producers.
For ex. Green plants.
Ques8:- How would you test the presence of starch in leaves?
Ans:- When iodine comes in contact with starch, a dark blue colour appears. Testing the presence of starch in leaves, when we dropped some solution of iodine on leaves they give dark blue colour. Thus we can say there is starch in leaves.
Ques9:- Write the differences between a parasite and a saprotroph.
Ans:-
Parasite :-
(i) It gets nutrients from host on which they live.
(ii) It lives on or in the host.
(iii) Ex: Cuscuta
Saprotroph :-
(i) It gets nutrient from dead and decaying matter.
(ii) It lives on dead or decaying stuff.
(iii) Ex: Bacteria and fungi.
Ques10:- Why do organisms take food?
Ans:- Organisms need food to
(i) Get energy to do work.
(ii) Build up body .
(iii) Repair damages in the body.
(iv) Maintain the functions of the body.
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