Class 7 Science - Chapter Transportation in Animals and Plants NCERT Solutions | Fill in the blanks. (i) The blood from
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 .
(i) Arteries Arteries have a thick, elastic layer to allow stretching and absorb pressure; it maintains the pressure in the circulatory system. The blood from the heart is transported to all parts of the body by the arteries and the arterioles. The arteries are the blood vessels that carry oxygenated blood from the heart to the tissues of the body through the capillaries.
(ii) Red blood Red blood cells are red in colour due to the presence of red pigment which is known as haemoglobin. Red blood cells carries oxygen from the lungs to all the cells of the body.
(iii) Capillaries Capillaries are the extremely narrow blood vessels (less than 1mm long) which connect arteries to veins and are present in all regions of the body. Capillaries are also known as ‘blood capillaries. Usually blood passes from the heart in the sequence through arteries, arterioles, capillaries, venules and veins and then get back to the heart.
(iv) Heartbeat The spontaneous rhythmic contraction and relaxation of the heart to pump out and receive the blood to and from the body and completes one cycle of it, is called a heartbeat. The heart beats about 72 times in a minute that can be counted easily by counting the pulses.
(v) Urea Urea is a major waste product that is produced in our body. It is excreted through the urine is the major function of the kidney.
(vi) Salts Sweat contains water and salts, and a little of urea and which is removed from the body by sweat glands through the skin.
(vii) Urine The urea and other unwanted salts dissolve in water in the body to form a yellowish liquid waste of which excretion is important; called urine. For the production of urine, nephrons and collecting ducts performs three processes: glomerular filteration, tubular reabsorption and tubular secretion.
(viii) Transpiration Transpiration is the loss of water from the aerial parts of the plants like leaves in the water vapours form; and this occurs through the stomata, cuticle or lenticels of the plants which is known as stomatal, cuticle and lenticels transpiration respectively.
More Questions From Class 7 Science - Chapter Transportation in Animals and Plants
- Q:-
What are stomata? Give two functions of stomata.
- Q:-
Draw a diagram of the human excretory system and label the various parts.
- Q:-
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 - Q:-
Describe the function of the heart.
- Q:-
What are the components of blood?
- Q:-
Does transpiration serve any useful function in the plants? Explain.
- Q:-
Why is transport of materials necessary in a plant or in an animal? Explain.
- Q:-
Why is it necessary to excrete waste products?
- Q:-
What will happen if there are no platelets in the blood?
- Q:-
Why is blood needed by all the parts of a body?
Popular Questions of Class 7 Science
- Q:-
State similarities and differences between the laboratory thermometer and the clinical thermometer.
- Q:-
State differences between acids and bases.
- Q:-
Classify the changes involved in the following processes as physical or chemical changes:
(a) Photosynthesis
(b) Dissolving sugar in water
(c) Burning of coal
(d) Melting of wax
(e) Beating aluminium to make aluminium foil
(f ) Digestion of food - Q:-
Name the elements that determine the weather of a place.
- Q:-
Fill the missing word in the blank spaces in the following statements:
(a) Wind is——————air.
(b) Winds are generated due to —————— heating on the earth.
(c) Near the earth’s surface __________air rises up whereas ___________ air comes down.
(d) Air moves from a region of ——— pressure to a region of ———. - Q:-
In addition to the rock particles, the soil contains
(i) air and water
(ii) water and plants
(iii) minerals, organic matter, air and water
(iv) water, air and plants - Q:-
Why does an athlete breathe faster and deeper than usual after finishing the race?
- Q:-
Fill in the blanks:
(a) Production of new individuals from the vegetative part of parent is called_____________.
(b) A flower may have either male or female reproductive parts. Such a flower is called_____________.
(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as _____________.
(d) The fusion of male and female gametes is termed as _____________.
(e) Seed dispersal takes place by means of _____________, _____________ and _____________. - Q:-
Classify the following as motion along a straight line, circular or oscillatory motion:
(i) Motion of your hands while running.
(ii) Motion of a horse pulling a cart on a straight road.
(iii) Motion of a child in a merry-go-round.
(iv) Motion of a child on a see-saw.
(v) Motion of the hammer of an electric bell.
(vi) Motion of a train on a straight bridge. - Q:-
Why do organisms need to take food?
Recently Viewed Questions of Class 7 Science
- Q:-
Classify the changes involved in the following processes as physical or chemical changes:
(a) Photosynthesis
(b) Dissolving sugar in water
(c) Burning of coal
(d) Melting of wax
(e) Beating aluminium to make aluminium foil
(f ) Digestion of food - Q:-
List the similarities and differences between aerobic and anaerobic respiration.
- Q:-
Describe the process of neutralisation with the help of an example.
- Q:-
Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?
- Q:-
Mark ‘T’ if the statement is true and ‘F’ if it is false:
(i) Carbon dioxide is released during photosynthesis. (T/F)
(ii) Plants which synthesise their food themselves are called saprotrophs. (T/F)
(iii) The product of photosynthesis is not a protein. (T/F)
(iv) Solar energy is converted into chemical energy during photosynthesis. (T/F) - Q:-
What is sewage? Explain why it is harmful to discharge untreated sewage into rivers or seas.
- Q:-
Match items in Column I with those in Column II:
Column I Column II
(a) Bud (i) Maple
(b) Eyes (ii) Spirogyra
(c) Fragmentation (iii) Yeast
(d) Wings (iv) Bread mould
(e) Spores (v) Potato
(vi) Rose - Q:-
Indicate the type of climate of the following areas:
(a) Jammu and Kashmir: _________________________________
(b) Kerala: ____________________________________________
(c) Rajasthan: __________________________________________
(d) North-east India: _____________________________________ - Q:-
Give two examples each of conductors and insulators of heat.
- Q:-
An electrician is carrying out some repairs in your house. He wants to replace a fuse by a piece of wire. Would you agree? Give reasons for your response.
- All Chapters Of Class 7 Science
- All Subjects Of Class 7