Explore topic-wise InterviewSolutions in Current Affairs.

1. arteries
2. red blood cells
3. capillaries
4. heartbeat
5. urea
6. salts
7. urine
8.  transpiration.

Transport of materials is necessary for plants or animals because due to it the nutrients and oxygen are made available to all the parts of the body. If the transport of necessary nutrients and oxygen does not take place in the body, the body will not be able to survive.

There are four components of blood:

• Plasma is a liquid part of the blood which is yellowish in colour and contains 90% water. It contains food, enzymes, wastes and proteins etc.
• Red blood cells are disc-shaped cells containing red coloured pigment called haemoglobin in it. Haemoglobin helps in the transportation of oxygen.
• White blood cells are the fighting cells which protect us against bacteria and foreign materials causing infections.
• Platelets help in the clotting of the blood.

If there are no platelets in the blood, then the blood would not be able to clot. A clot is formed because of platelets. They release blood clotting chemicals at the site of injury. These chemicals form a clot and prevent further bleeding.

Platelets are responsible for clotting of blood. If there are no platelets, the blood would not clot in case of an injury. This will lead to excess blood loss and finally in death of the person.

Class 7 Science MCQ Questions of Transportation in Animals and Plants with Answer were arranged dependent on the most recent exam pattern. We have compiled the MCQ Questions for Class 7 Science Transportation in Animals and Plants with Answers covering the whole syllabus and These MCQ Questions with Answers to assist understudies with understanding the idea well indeed. 

Practice these MCQ Questions for Class 7 Science Transportation in Animals and Plants with Answers. In the event that you Practice the Question on ordinary premise It will clear your questions appropriately and get ready for test. Transportation in Animals and Plants Class 7 MCQ test really look at the arrangement and idea of the part. you can test your insight and assess yourself.

Practice MCQ Questions for Class 7 Science

1. Which of the following is the main circulatory fluid in our body ?

(a) Plasma
(b) Lymph
(c) Blood
(d) None of these

2. Which one of the following contains haemoglobin?

(a) RBC
(b) WBC
(c) Platelets
(d) None of these.

3. What is the function of WBCs?

(a) Transport of oxygen
(b) Fight against germs
(c) Involved in blood clotting
(d) All of these

4. Blood platelets help in

(a) formation of urine
(b) excretion of urine
(c) sweating
(d) blood clotting

5. The muscular tube through which stored urine is passed out of the body is called:

(a) kidney
(b) ureter
(c) urethra
(d) urinary bladder

6. They are pipe-like, consisting of a group of specialised cells. They transport substances and form a two-way traffic in plants. Which of the following terms qualify for the features mentioned above?

(a) Xylem tissue
(b) Vascular tissue
(c) Root hairs
(d) Phloem tissue.

7. The absorption of nutrients and exchange of respiratory gases between blood and tissues takes place in:

(a) veins
(b) arteries
(c) heart
(d) capillaries

8. In which of the following parts of human body are sweat glands absent?

(a) Scalp
(b) Armpits
(c) Lips
(d) Palms

9. In a tall tree, which force is responsible for pulling water and minerals from the soil?

(a) Gravitational force
(b) Transportation force
(c) Suction force
(d) Conduction force

10. Aquatic animals like fish excrete their wastes in gaseous form as

(a) Oxygen
(b) Hydrogen
(c) Ammonia
(d) Nitrogen

11. Blood carries _____________ from lungs to the cells of the body 

(a) Argon
(b) Neon
(c) Carbon dioxide 
(d) oxygen

12.  The fluid part of the blood is called

(a) Plasma 
(b) RBC 
(c) WBC 
(d) Blood Platelets

13. The blood vessels which carry oxygen –rich blood from the heart to all parts of the body are called

(a) Arteries
(b) Veins
(c) RBC
(d) WBC 

14. White patches formed in areas like underarms are due to  

(a) Salts present in the sweat
(b) sugars present in the sweat
(c) Acids present in the sweat
(d) Bases present in the sweat

15. The effect of sweat on the human body is

(a) It causes cooling
(b) it causes heating
(c) it causes freezing
(d) It causes melting

16. The uric acid excreted by lizards is

(a) White in colour
(b) Red in colour
(c) Brown in Colour
(d) Black in colour

17. The vascular tissue for the transport of water and nutrients in the plant is called

(a) Xylem
(b) Phloem
(c) Tissue
(d) Plasma

18. The process by which a plant loses water through the stomata is called:

(a) excretion
(b) transpiration
(c) respiration
(d) sweating

19. The number of beats _______ is called the pulse rate.

(a) Per two minutes
(b) Per three minutes
(c) Per minute
(d) Per four minutes

20. Name an instrumental device used to amplify the sound of heart.

(a) Stethoscope
(b) UV machine
(c) Both (a) and (b)
(d) Ultrasound machine

21.What is the state of the blood?

(a) Solid
(b) Fluid
(c) Gas
(d) None of these

22. Which blood group is called as universal donor?

(a) O
(b) A
(c) B
(d) AB

23. The heart is located in the

(a) chest cavity
(b) stomach
(c) lungs
(d) all of these

24. How many chambers does the human heart have?

(a) Three
(b) Four
(c) Five
(d) Two

25.Which of the following are the tiny filtering units of the kidney?

(a) ureters
(b) bladder
(c) nephrons
(d) urethra

Answer:

1. Answer: (c) Blood

Explanation: Blood is the fluid connective tissue and main circulatory fluid that transports oxygen, waste and nutrients through out the body.

2. Answer: (a) RBC

Explanation: RBC contains hemoglobin. Hemoglobin can be described as a protein which is an integral part of the red blood cells.

3. Answer: (b) Fight against germs  

Explanation: They flow through your bloodstream to fight viruses, bacteria, and other foreign invaders that threaten your health. When your body is in distress and a particular area is under attack, white blood cells rush in to help destroy the harmful substance and prevent illness.

4. Answer: (d) blood clotting

Explanation: Platelets are tiny blood cells that help your body form clots to stop bleeding. If one of your blood vessels gets damaged, it sends out signals to the platelets. The platelets then rush to the site of damage and form a plug (clot) to fix the damage.

5. Answer: (c) urethra

Explanation: From the kidneys, the urine goes into the urinary bladder through tube-like ureters. It is stored in the bladder and is passed out through the urinary opening at the end of a muscular tube called the urethra.

6. Answer: (d) Phloem tissue

Explanation: Phloem tissue is a heterogeneous vascular tissue and complex tissue. It performs as a transport system for every soluble organic compound within vascular plants.

7. Answer: (d) capillaries

Explanation: Exchange of gases, nutrients, and waste between blood and tissue occurs in the capillaries.

8. Answer: (c) Lips

Explanation: Lips are the part of human body where sweat glands are absent.

9. Answer: (c) Suction force

Explanation:  Explanation: Roots absorb water and minerals from the soil continuously. Evaporation of water from leaves creates a suction force which causes the water to move upwards.

10. Answer: (c) Ammonia

Explanation: Aquatic animals perform the procedure of 'Excretion' depending on the availability and unavailability of water. They excrete there waste in the form of ammonia.

11. Answer: (d) oxygen

Explanation: The blood transports oxygen from the lungs to the cells of the body, where it is needed for metabolism. The carbon dioxide produced during metabolism is carried back to the lungs by the blood, where it is then exhaled (breathed out).

12. Answer: (a) Plasma 

Explanation: The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets. Red blood cells (RBC) deliver oxygen from your lungs to your tissues and organs.

13. Answer: (a) Arteries

Explanation: Arteries begin with the aorta, the large artery leaving the heart. They carry oxygen-rich blood away from the heart to all of the body's tissues.

14. Answer: (a) Salts present in the sweat

Explanation: Sweat contains water and salts. The water of sweat evaporates, leaving behind the salts which appear as white patches on our clothes.

15. Answer: (a) It causes cooling

Explanation: Its main function is to control body temperature. As the water in the sweat evaporates, the surface of the skin cools. An additional function of sweat is to help with gripping, by slightly moistening the palms.

16. Answer: (a) White in colour

Explanation:  Nitrogenous wastes in the body tend to form toxic ammonia, which must be excreted. Mammals such as humans excrete urea, while birds, reptiles, and some terrestrial invertebrates produce uric acid as waste. Uricothelic organisms tend to excrete uric acid waste in the form of a white paste or powder.

17. Answer: (a) Xylem

Explanation: Xylem is the tissue responsible for supporting the plant as well as for the storage and long-distance transport of water and nutrients, including the transfer of water-soluble growth factors from the organs of synthesis to the target organs.

18. Answer: (b) transpiration

Explanation: The process of losing water in the form of water vapour from stomata of the leaves is known as transpiration.

19. Answer: (c) Per minute

Explanation: Pulse is a term that signifies the throbbing of arteries as an effect of heartbeat and is counted by the number of beats per minute, which is called the pulse rate. The normal pulse rate (count of arterial pulse beats per minute) in a healthy adult at rest ranges from 72 to 80 beats per minute. However, the pulse rate may fluctuate with exercise, illness, injury and emotions. The pulse rate of an individual can be checked at various points on the body. These points are the neck, inside of the elbow, the wrist, groin, behind the knee, ankle joint and foot.

20. Answer: (a) Stethoscope

Explanation: Stethoscope, medical instrument used in listening to sounds produced within the body, chiefly in the heart or lungs.

21. Answer: (b) Fluid

Explanation: Your blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.

22. Answer: (a) O

Explanation: O negative blood is considered the universal blood donor type. It is compatible with all A, AB, B, and O positive blood types.

23. Answer: (a) chest cavity

Explanation: Your heart is located between your lungs in the middle of your chest, behind and slightly to the left of your breastbone (sternum). A double-layered membrane called the pericardium surrounds your heart like a sac.

24. Answer: (b) Four

Explanation: The heart has four chambers: two atria and two ventricles.

25. Answer: (c) nephrons

Explanation: The kidneys remove urea from the blood through tiny filtering units called nephrons. Each nephron consists of a ball formed of small blood capillaries, called a glomerulus, and a small tube called a renal tubule.

Click here for Practice MCQ Questions for Transportation in Animals Class 7

The heart is an organ that pumps blood throughout the body. It comprises four chambers:

• Atria (upper chambers)
• Ventricles (lower chambers)

The wall of the heart is made up of three layers:

• Epicardium- This is a protective layer made of connective tissues.
• Myocardium- This layer forms the heart muscles.
• Endocardium- This is the innermost layer and protects the valves and the heart.

1 – f,
2 – a,
3 – b,
4 – c,
5 – d,
6 – e,
7 – h,
8 – i,
9 – j,
10 – g

1. Main excretory organ in human is Kidney. 

2. The excretory substance in fish is Amonia. 

3. Blood Platelets help in blood clotting 

4. The main circulatory fluid in man is blood. 

5. Stethoscope is an instrument to hear the heartbeat.

(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 capillaries 

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

(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 salt.
(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.

1) 

B 2) 

D 3) F 

4) A 

5) C 

6) G

Antibiotics blocks the biochemical pathways which are responsible for the functioning of the bacteria. For example, penicillin blocks the pathway responsible for the making of the cell wall. As a result, the growing bacterial cell is not able to make cell wall and dies off easily.

The human cell on the other hand is devoid of cell wall and as such is not affected by penicillin.

(D) 1 – c, 2 – a, 3 – b

(B) Trypanosoma

(C) Diptheria

(D) Common cold

(D) Female Anophelus mosquito

Answer is (B) Filaria

Answer is (B) 2, 3

(d) Phloem tissue

( c) urethra

Possible answers are:
1. Without the root hairs the roots will not be able to absorb water and nutrients and the plant will die.
2.The stem of the rose plant may grow new roots and the plant will live.
3.The rose plant may not be able to survive in a different type of soil.

(c) Suction force

Correct answer is (i) Xylem

Process                                     Organ
(a) exhalation       -                     lungs
(b) egestion          -                     large intestines and anus
(c) excretion         -                     kidneys
(d) perspiration     -                     sweat glands (sweating)

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

(ii) Sweat contains water and salts. 

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

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

Blood is a liquid Connective tissue. It is the circulatory fluid. 

Its important functions are: 

1. It transports substances like digested food from the small intestine to other parts of the body. 

2. It Carries oxygen from the lungs to the cells of the body. 

3. It transports waste for removal from the body.

Blood is needed by all parts of the body as it is an important part of the transport system of our body. 

It performs the following important functions : 

(i) It transports O₂ from the lungs to all the body cells. 

(ii) It carries CO₂, a waste product back to the lungs, so that it can be exhaled easily. 

(iii) It transmits heat, thus regulating the body temperature. 

(iv) It also fights off diseases and infections.

Pulse is the throbbing due to the blood flowing in the arteries.

After alcoholic fermentation the multiplication of yeast stops because the alcohol formed during the process kills the yeast cells.

The correct answer is (A) acetaldehyde

The breakdown of organic matter by the activity of the earthworms and its elimination from its body is called Vermicast.

The breakdown of organic matter by the activity of the earthworms and its elimination from its body is called vermicast.

Vermicompost is. the compost produced by the action of earthworms in association with all other organisms in the compost unit.

The native species of earthworms cultured in India for vermicomposting such as Periyonyx excavatus, Lampito mauritii, Octochaetona serrata are endemic species. Some earthworm species introduced from other countries such as Eisenia fetida, Eudrilus eugeniae are exotic species.

Vermiwash is a liquid collected after the passage of water through a column of vermibed. It is useful as a foliar spray to enhance plant growth and yield. It is obtained from the burrows or drilospheres formed by earthworms. Nutrients, plant growth promoter substances and some useful microorganisms are present in vermiwash.

Ants, springtails, centipedes, slugs, mites, certain beetle larvae, birds, rats, snakes, mice, toads and other insects or animals which feed on worms.

Sericulture is an agro-based industry which denotes commercial production of silk through silkworm rearing.

Advantages of Aquaponic gardening. 

Water conservation: No need of water discharge and recharge as the water is maintained by recycling process.

Soil: Bottom soil may be loaded with freshwater. Microbes in water can convert the waste materials into usable forms like ammonia into nitrates which are used by the plants. Thus the soil fertility is maintained.

Pesticides: In this system use of pesticides is avoided and hence it is eco-friendly.

Weeds: Since the plants are cultured in confined conditions, growth of weeds is completely absent. The utilization of nutrient by plants is high in this method.

Artificial food for fishes: In this system plant waste and decays are utilized by fishes as food. So, the need for the use of supplementary feed can be minimized.

Fertilizer usage: Artificial or chemical fertilizers is not required for this system since the plants in the aquaponics utilize the nutrients from the fish wastes dissolved in water.

Correct Answer is: (b) Arjun

Poultry is the rearing and propagation of avian species.

Humus feeders

Metapenaeus dobsoni is a species of Prawn.

Species of prawn: A number of species of prawn are distributed in water resources such as Penaeus indicus, Penaeus monodon, Metapenaeus dobsoni and Macrobrachium rosenbergii.

Types of prawn fishery 

1. Shallow water prawn fishery – located on the west coast restricted to shallow waters. 

2. Estuaries and back waters or saline lake prawn fishery – The area of production of prawns are the back waters seen along the Western coast, Ennur, Pulicat, Chilka lake and Estuaries of Ganga and Brahmaputra rivers.

3. Freshwater prawn fishery – Prawns are caught from the rivers and lakes throughout India.

4. Marine prawn fishery – Most of the marine prawns are caught along the Indian coast belonging to the .family Penaeidae.