Ic3 Review Lesson 1-3 Science Answer Key Do Different Food Provide Different Amount of Energy
NCERT Solutions Course 7 Science Affiliate i – Free PDF Download
NCERT Solutions for Class 7 Science Affiliate one Diet in Plants is provided below to aid 7th standard students understand the concepts more finer. The NCERT Solutions for Class 7 Scientific discipline are prepared by practiced teachers according to the latest syllabus of CBSE Class 7 Science. Students should do regularly to excel in their Class 7 examinations.Practising these NCERT Solutions is the ultimate demand for students who intend to score proficient marks in the upcoming Science board test.
The NCERT Solutions for Class 7 Scientific discipline provided here help you in understanding the important topics thoroughly. The solutions are prepared by our panel of experts to assist you in understanding the plant nutrition topic deeply. These solved NCERT Solutions for Form 7 volition help you to score skilful marks and also help you in remembering the topic for a longer period.
Download PDF of NCERT Solutions for Grade 7 Science Chapter 1 – Nutrition in Plants
Access Answers of NCERT Solutions for Class 7 Science Chapter 1 – Diet in Plants
Do Questions
1. Why do organisms take food?
Solution:
All organisms require energy for their life processes. Plants set their food and acquire nutrients from abiotic components similar soil, air, water and sunlight. On the other hand, animals demand to become food from either plants or other animals to obtain nutrients; hence animals need to take food to acquire nutrients and energy.
2. Distinguish betwixt a parasite and a saprophyte.
Solution:
| Saprophytes | Parasites |
| Learn nutrients from dead and decaying thing | Parasites live on or in a host and become its nutrient at the expense of its host |
| Case: Fungi | Example: roundworm |
3. How would you exam the presence of starch in leaves?
Solution:
Take 2 potted plants of the same kind. Go along one in the night for 72 hours and the other in sunlight. Perform the iodine test with the leaves of both the plants as given below. Now get out the pot which was earlier kept in the dark, undisturbed for 3 – 4 days and perform the iodine test once more on its leaves.
Iodine test:
Put iodine solution on the leaf
Observation:
Bluish-blackness colour will exist observed on the leaves of the plant kept in sunlight, which indicates the presence of starch.
Blue-black colour will not be observed on the leaves of establish kept in the darkroom. This indicates the absence of starch.
4. Requite a cursory clarification of the procedure of synthesis of food in green plants
Solution:
Greenish plants use a process called as photosynthesis to prepare their food. The process is as follows
- Water is taken from the roots of the plant, and information technology is transported to leaves of the plant.
- Carbon dioxide from air enter the leaves through pores called stomata. This diffuses the jail cell containing chlorophyll.
- Water molecule is broken downwardly into Hydrogen and Oxygen with the assist of sunlight.
- Hydrogen combines with Oxygen and Hydrogen to form carbohydrates.
- Photosynthesis is represented past the post-obit equation.
v. Show with the help of a sketch that plants are the ultimate source of food.
Solution:
6. Make full in the blanks:
(a) Dark-green plants are called _________________ since they synthesise their own food.
(b) The food synthesised past plants is stored as _________________.
(c) In photosynthesis solar energy is absorbed past the pigment called ___________.
(d) During photosynthesis plants take in ______________________ and release __________________ gas.
Solution:
(a) Dark-green plants are called autotrophs since they synthesise their food.
(b) The food synthesised by plants is stored as starch.
(c) In photosynthesis, solar free energy is absorbed by the pigment called chlorophyll.
(d) During photosynthesis, plants have in carbon dioxide and release oxygen gas.
7. Name the following:
i) A parasitic plant with yellow, slender and branched stem.
2) A plant that is partially autotrophic.
iii) The pores through which leaves exchange gases.
Solution:
i) Cuscuta
2) Bullpen plant
iii) Stomata
eight. Tick the correct reply:
(a) Cuscuta is an example of:
(i) autotroph
(ii) parasite
(3) saprotroph
(iv) host
(b) The plant which traps and feeds on insects is:
(i) Cuscuta
(ii) cathay rose
(iii) pitcher plant
(four) rose
Solution:
(a) (2) Parasite
(b) (3) pitcher found
nine. Match the items given in Cavalcade I with those in Column Ii:
| Column- I | Column-II |
| Chlorophyll | Rhizobium |
| Nitrogen | Heterotrophs |
| Cuscuta | Pitcher institute |
| Animals | Leaf |
| Insects | Parasite |
Solution:
| Cavalcade- I | Column-Two |
| Chlorophyll | Leaf |
| Nitrogen | Rhizobium |
| Cuscuta | Parasite |
| Animals | Heterotrophs |
| Insects | Pitcher plant |
ten. Marker 'T' if the statement is truthful and 'F' if it is simulated:
(i) Carbon dioxide is released during photosynthesis. (T/F)
(ii) Plants which synthesise their food are called saprotrophs. (T/F)
(iii) The product of photosynthesis is not a protein. (T/F)
(4) Solar energy is converted into chemical energy during photosynthesis. (T/F)
Solution:
- False
- False
- True
- Truthful
eleven. Choose the correct pick from the following:
Which part of the plant takes in carbon dioxide from the air for photosynthesis?
(i) Root hair (2) Stomata (3) Leaf veins (iv) Petals
Solution:
The answer is (ii) Stomata
12. Cull the correct choice from the post-obit:
Plants accept carbon dioxide from the temper mainly through their:
(i) roots (2) stem (three) flowers (iv) leaves
Solution:
Answer is(four) leaves
xiii. Why do farmers grow many fruits and vegetable crops inside large greenhouses? What are the advantages to the farmers?
Solution:
Fruits and vegetable crops are grown in big greenhouses considering it protects crops from external climatic status and to provide suitable temperature for the growth of crops.
Advantages to farmers while growing fruits and vegetable crops inside greenhouses are
- It protects crops from diseases and adverse climatic weather condition.
- It protects crops from wind and rodents
Important topics covered in NCERT Solutions for Class seven Scientific discipline Affiliate 1 – Nutrition in Plants
- Mode of Nutrition in Plants
- Photosynthesis – food making process in Plants
- The culling mode of nutrition in Plants
- Saprophytes
- Nutrient replenishment in the soil
NCERT Class vii Science Chapter 1 is colourful equally it introduces you to the world of plants around yous. The curriculum has a diversity of projects that will make students enjoy the learning process. The curriculum introduces you to new terminology and concepts, which will make you look forrard to studying this Affiliate.
In Class vii Nutrition in Plants Affiliate, students will be introduced to many new concepts related to plants and how they get nutrition for themselves, they will also get to know nearly photosynthesis-process of preparation of food in plants, chlorophyll, stomata. Various other modes of nutrition in plants like insectivorous plants. This affiliate will teach nearly the basic of plants nutrients, how plants make their food, just reading this Chapter carefully will farther assist the students to understand the concepts of phytology in higher standards. Therefore it is highly recommended to prepare to note so that students tin go through the notes while revising the Chapter for the exams. Students tin use the NCERT Solutions for Class 7 Science Chapter 1 for any quick references to encompass complex topics.
Apart from this, by referring to these NCERT Solutions, students will too go to know nigh how nutrients are replenished in the soil, as we all know that nitrogen content is very much high in the air, but plants cannot take nitrogen through air and they need nitrogen in a soluble form. The bacterium called Rhizobium can take atmospheric nitrogen and tin can convert information technology to a usable form.
Students are also advised to solve the previous year questions too as the sample papers. Solving the sample papers and previous year papers will also help them to know the exam pattern too as the marking scheme.
Frequently Asked Questions on NCERT Solutions for Course vii Science Affiliate 1
What are the of import topics covered in the Chapter one of NCERT Solutions for Class 7 Science?
The of import topics covered in the Chapter 1 of NCERT Solutions for Class vii Scientific discipline are –
1. Fashion of Nutrition in Plants
2. Photosynthesis – food making process in Plants
three. The culling fashion of nutrition in Plants
4. Saprophytes
v. Nutrient replenishment in the soil
What are the benefits to the farmers by growing fruits and vegetable crops inside greenhouses in the Affiliate i of NCERT Solutions for Grade seven Science?
The benefits to the farmers by growing fruits and vegetable crops inside greenhouses are –
1. The crops are protected from diseases and agin climatic conditions.
ii. The crops are protected from rodents and wind.
To know more about this concept, students tin access the NCERT Solutions from BYJU'S. Solutions for all the textbook questions are nowadays in an authentic manner to help students ace the exam without fear.
What volition I learn from the Affiliate ane of NCERT Solutions for Class 7 Scientific discipline?
From the Chapter 1 of NCERT Solutions for Class vii Scientific discipline, yous will be introduced to the earth of plants. Various projects are included in the curriculum which makes students enjoy the learning process. New terminology and concepts are also covered in the solutions to better conviction among students to face up the examination. The basics of establish nutrients and how plants make their food are the other concepts discussed nether this Chapter. Information technology will provide a stiff foundation of fundamental concepts among students which will help them in their higher levels of education.
Source: https://byjus.com/ncert-solutions-class-7-science/chapter-1-nutrition-in-plants/
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