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CBSE 10th Standard Science Subject Life Processes HOT Questions 2 Mark Questions 2021

Published on: 29/05/2021

QB365 Provides the HOT Question Papers for Class 10 Science, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams

Download CBSE Class 10th Standard CBSE Science question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 10th Standard CBSE Science

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Std: 10th Standard CBSE - Science

chapter: - HOT Questions

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Questions:

Generic 2

5 x 2 = 10

Three organisms ate food in the form of glucose and the end products after respiration are:
a - ethanol + CO₂
b - CO₂+H₂O
c - Lactic acid + water
Explain how is this possible?

a - What is this structure called and give its state-open or closed?
b - Where are they present?
c - What controls the opening and closing of it?
d - Draw the opposite figure to this.

What do the following transport?
(a)Xylem
(b)Phloem
(c)Pulmonary vein
(d)Pulmonary artery

(a)What prevents the entry of food into trachea while swallowing?
(b)Why rate of breathing is faster in aquatic animals as compared to terrestrial animals?

How the process of digestion will be affected if the bile ducts get blocked?

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Answers Key:

Generic 2

5 x 2 = 10

(a) because of anaerobic respiration; (fermentation)
(b) because of aerobic respiration
(c) because of anaerobic respiration in muscle cells.

(a) Open stomata
(b) In leaves
(c) Guard cells
(d) Closed stomata

(a)Xylem- Transports water and dissolved minerals in plants.
(b)Phloem-Transport prepared food in plants.
(c)Pulmonary vein-Transports oxygenated blood from lungs to left ventricles of heart.
(d)Pulmonary artery -Transports deoxygenated blood from body to right ventricles.

(a)Epiglottis covers the opening of wind pipe during swallowing.
(b)Because the amount of dissolved O₂in water is less as compared to air in atmosphere.

The non-availability of bile in small intestine will affect digestion of fat as it cannot be emulsified and enzyme lipase will not act on fat effectively.