12th Biology Objective Questions and Answers in Hindi. We covered all the 12th Biology Objective Questions and Answers in Hindi MCQs in this post for free so that you can practice well for the exam.
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12th Biology Objective Questions and Answers in Hindi for Students
Which of the following classes of animals has/have a three-chambered heart?
(a) Pisces and Amphibia
(b) Amphibia and Reptilia
(c) Reptilia only
(d) Amphibia only
Option b - Amphibia and Reptilia
Which one of the following elements is involved in the control of the water content of the blood?
(a) Potassium
(b) Lithium
(c) Rubidium
(d) Caesium
Option a - Potassium
Which one of the following elements is essential for the formation of chlorophyll in green plants?
(a) Calcium
(b) Iron
(c) Magnesium
(d) Potassium
Option c - Magnesium
Damage to the apical meristem of a growing young plant will affect the:
(a) Length of the plant
(b) Color of the flower
(c) Color of the leaves
(d) Taste of the fruits
Option a - Length of the plant
Which of the following kingdoms has/have only unicellular organisms?
(a) Monera only
(b) Protista only
(c) Monera and Protista both
(d) Protista and Fungi both
Option c - Monera and Protista both
Which one of the following is a waterborne disease?
(a) Jaundice
(b) Tuberculosis
(c) Rabies
(d) Arthritis
Option a - Jaundice
The acidic semi-digested food coming out of the stomach is neutralized by:
(a) Pancreatic juice
(b) Duodenal secretion
(c) Large intestine secretion
(d) Bile juice
Option d - Bile juice
The oxygenated blood from the lungs is received by the:
(a) Left auricle
(b) Left ventricle
(c) Right auricle
(d) Right ventricle
Option a - Left auricle
The oxygen evolved during photosynthesis comes from the splitting of:
(a) Water
(b) Carbon dioxide
(c) Oxygen
(d) Light
Option a - Water
Lysosome is formed from which of the following cell organelles?
(a) Nucleus
(b) Endoplasmic reticulum
(c) Golgi bodies
(d) Ribosomes
Option c - Golgi bodies
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