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Class 7 Nutrition in Plants

Last updated on August 30th, 2023 at 01:57 am

Class 7 Nutrition in Plants


Nutrition in Plants Class 7 Notes | Nutrition in Plants Class 7 Extra Questions with Answers.

Fill in the blanks:-

  1. Insectivorous plants grow in soil that is poor in …….[nutrients]
  2. ……….are organisms that are dependent on other organisms.[ Parasites]
  3. A ……is the result of a symbiotic relationship between algae and fungi.[ lichen]
  4. ……..plants obtain their nutrition from dead and decaying matter.[ Saprophytic]
  5. Parasitic plants obtain their food from other living organisms called ……[host]
  6. Light is converted into ………energy during photosynthesis.[ chemical]
  7. Food produced by plants is stored in the form of ……….[starch]


Answer in One Word

QUE – Name the pores through which leaves exchange gases.

ANS-  Stomata


QUE – Name the process by which plants produce food.

ANS-  Photosynthesis


QUE – Give the name of a gas that is used in photosynthesis.

ANS-  Carbon di-oxide


QUE – Name a gas that is produced during photosynthesis.

ANS-  Oxygen


QUE – Name the green pigment found in plant leaves.

ANS-  Chlorophyll


QUE – Identify a parasitic plant with a yellow, slender, tubular stem.

ANS-  Amarbel  [cuscuta ]


Answer in short

QUE – Define Nutrition:

The process of taking food by an organism as well as the utilization of this food by the organism is called nutrition.


QUE – Define Autotrophs:

Autotrophs are organisms that make their own food from simple substances through photosynthesis. Most green plants are autotrophs.


QUE – Define Heterotrophs:

Heterotrophs are organisms that can’t produce food by photosynthesis and must eat green plants or animals. All non-green plants and animals (including human beings) are heterotrophs.


QUE – Define Starch:

The process of photosynthesis first produces a simple carbohydrate called glucose. Glucose is then converted into starch, a complex carbohydrate. Various parts of plants, including leaves, store this starch as food.


QUE – Define Chlorophyll:

The chlorophyll in leaves absorbs light energy from the sun and uses it for photosynthesis, which produces food.


QUE – Define Parasite:

A parasite is an organism that lives on or inside another organism (called a host) and derives its food from that organism. Cuscuta is an example of a parasite plant. Its Hindi name is Amarbel. There is no chlorophyll in the Cuscuta plant.


QUE – Define Insectivorous Plants:

Insectivorous plants are those that consume insects as part of their diet. Common insectivorous plants include: Pitcher plant, Sundew, Venus fly-trap and Bladderwort.An insectivorous plant consumes insects for nitrogen compounds required for its growth.


QUE – Define Symbiotic Plant:

Plants living together as if they are one plant can be called symbiotic (and such plants are called symbiotic plants).


QUE – What is symbiosis?

The term ‘symbiosis’ refers to a relationship between two organisms that is mutually beneficial to both of them.


What is nutrition? 

Nutrition is the process of taking in food by an organism to obtain energy, materials for growth, and materials for repairing damaged body parts.


How do plants and animals obtain their food? 

Plants can make their own food, while animals, including humans, cannot make food themselves. Animals obtain food from plants or other animals that eat plants.


What is the role of chlorophyll in photosynthesis? 

Chlorophyll is a green pigment present in the leaves of green plants, which absorbs sunlight energy required for the process of photosynthesis.


What is the equation for photosynthesis? 

The equation for photosynthesis is:

Carbon dioxide + Water + Sunlight energy (in the presence of chlorophyll) → Glucose + Oxygen.


What happens to the Oxygen produced during photosynthesis? 

The Oxygen produced during photosynthesis goes into the air and is utilized by all living organisms for survival.


What is the first simple carbohydrate produced during photosynthesis?

The first simple carbohydrate produced during photosynthesis is glucose.


What is the function of chlorophyll in the process of photosynthesis?

Chlorophyll is necessary for capturing sunlight energy to produce food during photosynthesis.


What are the common parts of an animal cell? 

A: The common parts of an animal cell include the cell membrane, cytoplasm, nucleus, mitochondria, and small vacuoles.


What is the function of the cell membrane? 

A: The function of the cell membrane is to protect the cell and control the passage of materials in and out of the cell.


What is the function of the nucleus? 

A: The function of the nucleus is to control all the activities of the cell.


What is the function of mitochondria? 

A: The function of mitochondria is to carry out respiration to release energy from food.


What are the additional parts present in plant cells?

A: The additional parts present in plant cells are the cell wall, chloroplasts, and large vacuoles.


What is the function of the cell wall in plant cells? 

A: The function of the cell wall in plant cells is to protect the cell, give it a fixed shape, and make it rigid.


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