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question_answer1)
The given figure is a demonstration of an experiment to show that carbon dioxide is essential for photosynthesis. What is the substance 'X', kept in watch-glass?
A)
Potassium hydroxide done
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B)
Sodium bicarbonate done
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C)
Sodium carbonate done
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D)
Potassium sulphate done
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question_answer2)
Which of the following is not related to the autonomic neural system?
A)
Peristalsis done
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B)
Digestion done
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C)
Excretion done
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D)
Memory and learning done
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question_answer3)
Refer to the given figure and select the correct option regarding it.
A)
It is a part of our endocrine system, done
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B)
It is of only two types; dendritic and axonic. done
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C)
It is not physically connected with other cell of its type. done
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D)
It possesses multiple nuclei. done
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question_answer4)
Each nephron has a cup shaped upper end called _____, which contains a _____.
A)
Bowman's capsule, Ampulla done
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B)
Capillaries, Bowman's capsule done
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C)
Ampulla, Glomerulus done
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D)
Bowman's capsule, Glomerulus done
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question_answer5)
Refer to the given figure of heart and select the correct option.
A)
The blood from Y reaches lungs. done
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B)
The blood from body enters heart through P. done
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C)
Y receives blood from lungs. done
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D)
Q receives blood from body. done
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question_answer6)
The product of fermentation is _____.
A)
Formic acid done
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B)
Ethanol done
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C)
Methanol done
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D)
Citric acid done
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question_answer7)
The light phase of photosynthesis occurs in _____ and dark phase occurs in _____.
A)
Stroma, Grana done
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B)
Grana, Thylakoid done
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C)
Grana, Stroma done
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D)
Thylakoid, Grana done
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question_answer8)
Gita is supposed to face an interview. During the first five minutes before the interview she experiences sweating, increased rate of heartbeat, increased respiratory rate, etc. Which of the following hormones has increased in her blood and is responsible for her restlessness?
A)
GnRH done
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B)
Estrogen done
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C)
Adrenaline done
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D)
Insulin done
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question_answer9)
Transpiration has been described as a 'necessary evil' because it is inevitable, but potentially harmful. Which of the following statements describe this?
(i) It causes absorption of mineral salts. |
(ii) It regulates plant temperature. |
(iii) It causes wilting and injury in plants. |
(iv) It causes ascent of sap. |
A)
(i) and (iv) only done
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B)
(i), (ii) and (iii) only done
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C)
(i), (ii) and (iv) only done
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D)
(i), (ii), (iii) and (iv) done
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question_answer10)
Match the phytohormones in column I with role played by them in column II and select the correct option from the codes given below.
Column I |
Column II |
(a) Auxin |
(i) Cell division |
(b) Gibberellin |
(ii) Induces Seed dormancy |
(c) Cytokinin |
(iii) Cell enlargement |
(d) ABA |
(iv) Ripening of fruits |
(e) Ethylene |
(v) Breaking seed dormancy |
A)
(a) -(v), (b)-(ii), (c)-(i), (d)-(iii), (e)-(iv) done
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B)
(a)-(iii), (b)-(v), (c)-(i), (d)-(ii), (e)-(iv) done
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C)
(a)-(v), (b)-(iv), (c)-(ii), (d)-(i), (e)-(iii) done
clear
D)
(a)-(ii), (b)-(v), (c)-(iii), (d)-(i), (e)-(iv) done
clear
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question_answer11)
The given figure shows the pathway of a nerve impulse in a reflex action. Which part serves as a link between neurons?
A)
W done
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B)
X done
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C)
Y done
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D)
Z done
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question_answer12)
Study the given experimental setup.
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By measuring the movement of the oil drop in the apparatus, what can be investigated?
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A)
Carbon dioxide released during germination done
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B)
Heat released during germination done
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C)
Oxygen used during germination done
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D)
Water produced during germination done
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question_answer13)
Match column I with column II and select the correct option from the codes given below.
Column I |
Column II |
(a) Calcitonin |
(i) Pancreas |
(b) Glucagon |
(ii) Ovary |
(c) Progesterone |
(iii) Adrenal gland |
(d) Corticoids |
(iv) Thyroid gland |
(e) Prolactin |
(v) Pituitary gland |
|
(vi) Parathyroid gland |
A)
(a)-(ii), (b)-(v), (c)-(iv), (d)-(vi), (e)-(i) done
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B)
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii), (e)-(v) done
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C)
(a)-(v), (b)-(iv), (c)-(iii), (d)-(ii), (e)-(i) done
clear
D)
(a)-(i), (b)-(ii), (c)-(iv), (d)-(v), (e)-(vi) done
clear
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question_answer14)
Given below are the events of photosynthesis. Identify which of the following is/are not true and select the correct option.
(i) Absorption of light energy by chlorophyll. |
(ii) Conversion of light energy to chemical energy and splitting of carbon dioxide into carbohydrates and oxygen. |
(iii) Reduction of carbon dioxide to carbohydrates. |
(iv) Conversion of chemical energy to radiant energy and splitting of water molecules into hydrogen and oxygen. |
A)
(i) and (ii) only done
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B)
(ii) only done
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C)
(ii) and (iii) only done
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D)
(ii) and (iv) only done
clear
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question_answer15)
Which of the following statements are correct regarding the given figure?
(i) The parts labelled as Q and R carry blood having low oxygen concentration. |
(ii) The parts labelled as P, Q and R carry blood having low oxygen concentration. |
(iii) The blood flows out of the heart through blood vessel Q when ventricle contracts. |
(iv) The blood is flowing out of the heart through blood vessel O when atria contract. |
A)
(ii) and (iv) only done
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B)
(ii), (iii) and (iv) only done
clear
C)
(i), (ii) and (iii) only done
clear
D)
(i) and (iii) only done
clear
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question_answer16)
The given graph shows changes in the air pressure of lungs during breathing. What causes the change in air pressure during period X?
A)
Contraction of the diaphragm muscles done
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B)
Decrease in the volume of the lungs done
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C)
Movement of ribs downward and inward done
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D)
Relaxation of the external intercostal muscles done
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question_answer17)
The given graph shows the changes in the volume of the lungs of a person at rest over a period of 20 seconds.
(i) How many breaths per minute is the person taking when at rest? |
(ii) Which two points in the graph (C, D, E or F), shows inspiration and expiration? |
A)
B)
C)
D)
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question_answer18)
The thyrotropin releasing hormone (TRH) from the ___(1)___ stimulates the ___(2)___ to secrete the thyroid stimulating hormone (TSH), which in turn stimulates the thyroid gland to secrete thyroxine. A ___(3)___ amount of thyroxine in the blood exerts ___(4)___ effect on (1) so that ___(5)___ TRH and TSH are produced. This eventually ___(6)___ the amount of thyroxine. It is called ___(7)___ feed back control.
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Select the option that correctly fills up the blanks in the above passage.
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A)
(1)-Posterior lobe of pituitary gland, (2)-Hypothalamus, (3)-Low, (4)- Inhibitory, (5)-Lesser, (6)-Decreases, (7)-Negative done
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B)
(1)-Hypothalamus, (2)-Posterior lobe of pituitary gland, (3)-Low, (4)-Stimulatory, (5)-More, (6)-Increases, (7)-Positive done
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C)
(1)-Hypothalamus, (2)-Anterior lobe of pituitary gland, (3)High, (4)-Inhibitory, (5) -Lesser, (6)-Decreases, (7)-Negative done
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D)
(1)-Anterior lobe of pituitary gland, (2) Hypothalamus, (3)-High, (4)-Stimulatory, (5)-More, (6)-Increases, (7)- Positive done
clear
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question_answer19)
Refer to the following figure. Which of the following statements correctly describes the relationship between cells Y and Z?
A)
Y provides the carbohydrates that are transported by Z. done
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B)
Y transports sucrose, while Z transports water and minerals. done
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C)
Y helps to filter the liquid transported in Z to facilitate translocation. done
clear
D)
Y contains ribosomes that synthesize proteins required by Z. done
clear
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question_answer20)
The diagram shows a model of a nephron and its associated blood vessels.
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This model has been criticized for being a poor representation of a nephron. Which of the following statements explain(s) this?
1. The rubber tubing at B is not split up into numerous branches like the capillary network of the glomerulus. |
2. The rubber tubing at B should be continuous and not contain small pores. |
3. The stem of the thistle funnel (E) is not coiled to represent the convoluted tubules of the nephron. |
A)
1 only done
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B)
1 and 3 only done
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C)
2 and 3 only done
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D)
1, 2 and 3 done
clear
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