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Chapter 1: Nutrition in Plants

Chapter 2: Nutrition in Animals

Chapter 3: Fibre to Fabric

Chapter 4:Heat

Chapter 5: Acids, Bases and Salts

Chapter 6: Physical and Chemical Changes

Chapter 7: Weather, Climate and Adaptations of Animals to Climate

Chapter 8: Winds, Storms and Cyclones

Chapter 9:Soil

Chapter 10: Respiration in Organisms

Chapter 11:Transportation in Animals and Plants

Chapter 12:Reproduction in Plants

Chapter 13:Motion and Timers

Chapter 14: Electric Current and Its Effects

Chapter 15:Light

Chapter 16:Water: A Precious Resource

Chapter 17: Forests: Our Lifeline

Chapter 18: Wastewater Story

class 7 science chapter 11

Transportation in Animals and Plants

NCERT Solutions for Class 7 Science chapter 11 Exercise Question

Question 1
Match structures given in Column I with functions given in Column II.

Column- I Column-II
(i) Stomata (a) Absorption of water
(ii) Xylem (b) Transpiration
(iii) Root hairs (c) Transport of food
(iv) Phloem (d) Transport of water
(e) Synthesis of carbohydrates
Answer
Column- I Column-II
(i) Stomata (b) Transpiration
(ii) Xylem (d) Transport of water
(iii) Root hairs (a) Absorption of water
(iv) Phloem (c) Transport of food

Question 2
Fill in the blanks.

(i) The blood from the heart is transported to all parts of the body by the _________ .

(ii) Haemoglobin is present in _________ cells.

(iii) Arteries and veins are joined by a network of _________ .

(iv) The rhythmic expansion and contraction of the heart is called___________ .

(v) The main excretory product in human beings is_____________ .

(vi) Sweat contains water and ____________ .

(vii) Kidneys eliminate the waste materials in the liquid form called _______________ .

(viii) Water reaches great heights in the trees because of suction pull caused by ________ .

Answer

(i) The blood from the heart is transported to all parts of the body by the arteries .

(ii) Haemoglobin is present in red blood cells.

(iii) Arteries and veins are joined by a network of capillaries .

(iv) The rhythmic expansion and contraction of the heart is called heartbeat .

(v) The main excretory product in human beings is urea .

(vi) Sweat contains water and salts .

(vii) Kidneys eliminate the waste materials in the liquid form called urine .

(viii) Water reaches great heights in the trees because of suction pull caused by transpiration .

Question 3
Choose the correct option:

(a) In plants, water is transported through

(i) xylem

(ii) phloem

(iii) stomata

(iv) root hair

(b) Water absorption through roots can be increased by keeping the plants

(i) in the shade

(ii) in dim light

(iii) under the fan

(iv) covered with a polythene bag

Answer

a) i) Xylem

b) iii) under the fan

Question 4
Why is transport of materials necessary in a plant or in an animal? Explain.

Answer

Transport of materials necessary in a plant or in an animal because due to which it transport food and oxygen and other use full component to other part of body and also help to remove waste from body that are require for survive.

Question 5
What will happen if there are no platelets in the blood?

Answer

Platelets of blood are responsible for the clotting of the blood If there are no platelets, then blood will not clot as result when we get injury blood starts flowing from body.

Question 6
What are stomata? Give two functions of stomata.

Answer

The tiny opening pores present on the leaf surface are known as stomata which is surrounded by two kidney like structure called guard cells.

Functions of stomata are

  • It helps in exchange of gases
  • It control water movement through transpiration

Question 7
Does transpiration serve any useful function in the plants? Explain.

Answer

Transpiration serves the following functions in plants

  • It helps the loss of water through stomata .
  • It helps in transport of water and minerals to leaves for photosynthesis process
  • It also cools the plant

Question 8
What are the components of blood?

Answer

There are four components of blood:
i)Red blood cells
ii) white blood cells
iii)platelets
iv) plasma.

Question 9
Why is blood needed by all the parts of a body?

Answer

Blood needed by all the parts of a body because it transport food and oxygen to the cell of body and help to expel out carbon dioxide and waste from our body. Blood also fights becteria and diseases and carries hormones around the body.

Question 10
What makes the blood look red?

Answer

The red pigment present in blood called Haemoglobin which makes blood red.

Question 11
Describe the function of the heart.

Answer

The heart is an organ which beats continuously to act as a pump for the transport of blood. This blood sends oxygen and nutrients to all parts of your body and carries away carbon dioxide and waste products it has four chambers helps to avoid mixing up of blood-rich in oxygen with the blood-rich in carbon dioxide.

Question 12
Why is it necessary to excrete waste products?

Answer

Certain waste products are produce during the functioning of body cells. which are toxic for our body and need to remove because it cause certain problem for our body .

Question 13
Draw a diagram of the human excretory system and label the various parts.

Answer