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Important Questions Test: Transportation in Animals & Plants


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20 Questions MCQ Test Science Class 7 | Important Questions Test: Transportation in Animals & Plants

Important Questions Test: Transportation in Animals & Plants for Class 7 2022 is part of Science Class 7 preparation. The Important Questions Test: Transportation in Animals & Plants questions and answers have been prepared according to the Class 7 exam syllabus.The Important Questions Test: Transportation in Animals & Plants MCQs are made for Class 7 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Important Questions Test: Transportation in Animals & Plants below.
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Important Questions Test: Transportation in Animals & Plants - Question 1

The aroma of food comes from the kitchen because of-

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 1

Diffusion (in gases) is the phenomena  in which the gas particles mixes with air. Diffusion is directly proportional to temperature. If temperature is increased the gases will move move around faster.Air is made up of molecules of gases. The molecules of gases arejingling. Heating up of molecules increases the jingling. These jingling molecules gets dispersed around in air very easily.Cold molecules jingles at a slower rate. Therefore, they arent dispersed around in air quickly.The same applies on gases(smell) from food.

Important Questions Test: Transportation in Animals & Plants - Question 2

One of our body organs is used to filter waste products of the blood.

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 2

The kidneys are two bean-shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood before sending it back to the heart.

Important Questions Test: Transportation in Animals & Plants - Question 3

A kidney, ureter and urinary bladder together are called-

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 3

The systems that excrete wastes from the body is called excretory system.The principal organs of the excretory system are the kidneys, ureters, urethra, and urinary bladder.

Important Questions Test: Transportation in Animals & Plants - Question 4

Cardiovascular system is also known as

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 4

The circulatory system is a vast network of organs and vessels that is responsible for the flow of blood, nutrients, hormones, oxygen and other gases to and from cells. Without the circulatory system, the body would not be able to fight disease or maintain a stable internal environment — such as proper temperature and pH — known as homeostasis.

Important Questions Test: Transportation in Animals & Plants - Question 5

The part of blood which does not have a nucleus.

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 5

The absence of a nucleus is an adaptation of the red blood cell for its role. It allows the red blood cell to contain more hemoglobin and, therefore, carry more oxygen molecules.

Important Questions Test: Transportation in Animals & Plants - Question 6

The vascular tissue which conducts food to various plant parts is the

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 6

Xylem transports water and nutrients and not food.

Important Questions Test: Transportation in Animals & Plants - Question 7

The pulmonary arteries carry

Important Questions Test: Transportation in Animals & Plants - Question 8

The blood vessel which carries blood from lungs to heart is called

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 8

Pulmonary veins are responsible for carrying oxygenated blood from the lungs back to the left atrium of the heart.

Important Questions Test: Transportation in Animals & Plants - Question 9

Select the type of cells, present in blood, whose main function is to fight against diseases by destroying harmful bacteria and other foreign material.

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 9

WBCs are an important part of the immune system. These cells help fight infections by attacking bacteria, viruses, and germs that invade the body.

Important Questions Test: Transportation in Animals & Plants - Question 10

The process by which the oxygenated blood moves from left auride to left ventricle and then through aorta to all parts of the body is known as

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 10

The pulmonary vein empties oxygen-rich blood from the lungs into the left atrium of the heart. As the atrium contracts, blood flows from your left atrium into your left ventricle.

Important Questions Test: Transportation in Animals & Plants - Question 11

Which of the following is responsible for the red colour of red blood cells?

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 11

The red colour is due to presence of haemoglobin.

Important Questions Test: Transportation in Animals & Plants - Question 12

Select the one that is a small muscular balloon like organ, which swells up when it is fall of urine and shrinks in size again after urine has been emptied out of it.

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 12

urinary bladder

Important Questions Test: Transportation in Animals & Plants - Question 13

Which of the following plays the major role in clotting of blood?

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 13

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. they form a plug (clot) to fix the damage.

Important Questions Test: Transportation in Animals & Plants - Question 14

The clotting of blood is to

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 14

seal up wounds to avoid loss of blood

Important Questions Test: Transportation in Animals & Plants - Question 15

Which of the following groups represent correctly the substances that the capillaries exchange between blood and tissues?

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 15

Oxygen, carbon dioxide, food, waste products

Important Questions Test: Transportation in Animals & Plants - Question 16

Which of the following mechanisms is not used by human beings for excretion of waste materials from their bodies?

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 16

Transfusion is not an excretory mechanism.

Important Questions Test: Transportation in Animals & Plants - Question 17

By whom was the circulation of blood discovered?

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 17

Circulation of blood was discovered by William harvey.

Important Questions Test: Transportation in Animals & Plants - Question 18

In plants which of the following is used for absorption of water?

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 18

Root hair increases the area for absorption of water.

Important Questions Test: Transportation in Animals & Plants - Question 19

The transportation of water takes place through a large spaced potato cavity filled with sugar solution placed in a dish containing small amount of water?

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 19

through movement of one cell to another

Important Questions Test: Transportation in Animals & Plants - Question 20

The process of filtering the waste containing body fluids is carried out by blood capillaries in which of the following parts of our body?

Detailed Solution for Important Questions Test: Transportation in Animals & Plants - Question 20

The kidneys are two bean-shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood before sending it back to the heart.

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