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NTSE Test: Life Processes - Class 10 MCQ


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15 Questions MCQ Test Science Class 10 - NTSE Test: Life Processes

NTSE Test: Life Processes for Class 10 2024 is part of Science Class 10 preparation. The NTSE Test: Life Processes questions and answers have been prepared according to the Class 10 exam syllabus.The NTSE Test: Life Processes MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for NTSE Test: Life Processes below.
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NTSE Test: Life Processes - Question 1

During systole of ventricle

Detailed Solution for NTSE Test: Life Processes - Question 1
During ventricular systole, blood from the left ventricle moves out to the systemic circulation. Deoxygenated blood from the right ventricle moves out into the pulmonary artery to reach the lungs.
NTSE Test: Life Processes - Question 2

From which part of the alimentary canal does chemical digestion begins?

Detailed Solution for NTSE Test: Life Processes - Question 2
Chemical digestion involves enzymes. In the mouth, chemical digestion is initiated when the food comes in contact with saliva, which is secreted by salivary glands. It contains salivary amylase which begins the digestive process by breaking down starch and converting it into maltose. Chemical digestion then further continues in stomach and then finally in the small intestine.
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NTSE Test: Life Processes - Question 3

Kidney has neurons for the digestive function.

Detailed Solution for NTSE Test: Life Processes - Question 3
The kidney is the excretory organ of the vertebrates. Each kidney has nearly one million complex tubular structures called nephrons, which are the functional units of the kidney and serve to filter wastes from the blood
NTSE Test: Life Processes - Question 4

Which of the following sequences is truly a systemic circulation pathway?

Detailed Solution for NTSE Test: Life Processes - Question 4
Systemic circulation carries blood from the heart to the tissues and then carries deoxygenated blood from tissues towards the heart. It helps to distribute the nutrients to different tissues and picks the carbon dioxide and waste. Systemic circulation involves the movement of blood from lungs to the left auricle through pulmonary vein, which is then pumped to the left ventricle. From here the blood goes through the aorta which divides into arteries. The arteries carry the blood towards the tissues and the deoxygenated blood is returned to the right auricle through veins. Thus the correct option is (b)
NTSE Test: Life Processes - Question 5

Which is the characteristic of heterotrophs?

Detailed Solution for NTSE Test: Life Processes - Question 5
Difference between autotrophs and heterotrophs is as follows

1. Autotrophs are the organisms that prepare their own food, whereas, heterotrophs are the organisms that are dependent on other organisms for food.

2. Autotrophs have chlorophyll, whereas, heterotrophs lack chlorophyll.

NTSE Test: Life Processes - Question 6

The heart is covered by

Detailed Solution for NTSE Test: Life Processes - Question 6
The heart is covered by pericardium. It is a fluid-filled sac It protects the heart. It is made up of an outer fibrous layer and inner serous membrane. Beneath pericardium, epicardium is present. It is the outer layer of muscle covering the external surfaces of the heart. Endocardium is the inner layer of the heart.
NTSE Test: Life Processes - Question 7

Autotrophs and heterotrophs differ in

Detailed Solution for NTSE Test: Life Processes - Question 7

Autotrophs are organisms that can produce their own food using light energy through photosynthesis or by using chemical energy through the process of chemosynthesis.

Hence, autotrophs obtain carbon from inorganic sources like carbon dioxide.

Heterotrophs cannot synthesize their own food and are dependent on other organisms for nutrition.

Hence, heterotrophs obtain reduced carbon in the form of carbohydrates from other organisms.

NTSE Test: Life Processes - Question 8

Lymph can be defined as

Detailed Solution for NTSE Test: Life Processes - Question 8
  • Lymph is a colorless fluid, containing specialized lymphocytes, which are responsible for the immune responses of the body.

  • Lymph is also an important carrier for nutrients, hormones, etc. Fats are absorbed through lymph in the lacteals present in the intestinal villi. Lymph lacks RBCs and platelets.

  • Lymph contains white blood cells. So option (d) is correct.

NTSE Test: Life Processes - Question 9

Minerals absorbed by roots move to the leaf through

Detailed Solution for NTSE Test: Life Processes - Question 9
Mineral salts absorbed by the roots move laterally from epiblema to xylem through cortex, endodermis, and percycle. Finally, they are transported upwards through xylem along with the transpiration stream.
NTSE Test: Life Processes - Question 10

The process of taking in CO2 by plants and releasing O2 is component of

Detailed Solution for NTSE Test: Life Processes - Question 10
The process of taking in CO2 by plants and releasing O2 is the component of Photosynthesis. Photosynthesis is an anabolic process happening in green plants during which the plant body synthesizes its own food material by taking carbon dioxide from the atmosphere and water from soil in presence of sunlight. It proceeds in the sequence of light phase and dark phase. The food formed by the process of photosynthesis is glucose. CO2 which is taken by the plants is released by humans as the by-product of respiration and O2 released by plants is taken by humans for respiration.
NTSE Test: Life Processes - Question 11

Choose the correct answer from the alternatives given: The respiratory centre, which regulates respiration in humans is located in ______________.

Detailed Solution for NTSE Test: Life Processes - Question 11
The medulla oblongata is the primary respiratory control center. Its main function is to send signals to the muscles that control respiration to cause breathing to occur. There are two regions in the medulla that control respiration: The ventral respiratory group stimulates expiratory movements.
NTSE Test: Life Processes - Question 12

Which of the following part/s of the human digestive system involves both chemical and mechanical ways of digestion?

Detailed Solution for NTSE Test: Life Processes - Question 12
a) Oesophagus: It is a long tube-like structure that leads food from mouth to stomach by peristalsis movement of muscles.

b) Stomach: It is the digestive part which is J shaped and store food around 4-5 hours and churn the food with churning movement and acid and pepsinogen mix with the food which forms pepsin which helps in the digestion of protein.

c) Mouth: It is the first part of the digestive tract where food is broken down into a paste by teeth and digestion of starch starts here with the help of enzyme salivary amylase. So the correct option is 'Both B and C'.

NTSE Test: Life Processes - Question 13

Water lost by transpiration is?

Detailed Solution for NTSE Test: Life Processes - Question 13

Transpiration is the process by which plants lose water in the form of water vapor. Water vapor is almost entirely free of dissolved salts and solutes, so water lost through transpiration is essentially pure water

NTSE Test: Life Processes - Question 14

Doctors measure the blood pressure with the instrument known as__________.

Detailed Solution for NTSE Test: Life Processes - Question 14
The sphygmomanometer is a device used by doctors to measure the blood pressure of the patient. It measures the systolic and diastolic brachial artery pressure.
NTSE Test: Life Processes - Question 15

The process by which cells obtain energy from glucose is called:

Detailed Solution for NTSE Test: Life Processes - Question 15

a) Respiration

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