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Dakshana Mock Test Season V

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Dakshana Mock Test Season V

1] In a space exploration, scientists found a sample on planet X having cell like composition. Upon examination, they failed to notice any movement at molecular level in these structures. On the basis of this information, will you classify these structures as

i. Living
ii. Non-living
iii. Partly living
iv. Cannot classify

2] Dark reaction and light reaction of photosynthesis takes place in

i. stroma and grana of chloroplast, respectively
ii. grana and stroma of chloroplast, respectively
iii. grana only
iv. stroma only

3] In desert plants, the stomata remain open during

i. Day
ii. Night
iii. Only during morning
iv. Only during evening

4] Bile juice contains which of the following components that helps in the digestion of fat?

i. Lipase
ii. Bile salts
iii. Bile pigments
iv. Sodium Bicarbonate

5] Fill in the blanks. In the process of respiration ____.

i. larger molecules are broken down into smaller molecules
ii. molecules undergo oxido-reductive chemical process to liberate energy
iii. smaller molecules are used to build up body
iv. None of these

6] Fill in the blanks. The process of respiration ____.

i. always requires oxygen
ii. may or may not require oxygen
iii. does not require oxygen
iv. None of these

7] Specific organs are not required for taking food, gaseous exchange and removal of wastes in unicellular organisms because

i. it is simple and very small
ii. it has large surface area
iii. it is in direct contact with its environment
iv. All of these

8] The transportation system in an organism is responsible for

i. removal of waste and toxic products from cells to excretory tissue
ii. distribution of useful materials from a particular tissue to all cells
iii. transportation of hormones only
iv. both (i) and (ii)

9] The excretory waste products are

i. useless metabolic by-products
ii. useless metabolic by-products that could be toxic
iii. always toxic
iv. remains of undigested food

10] Through stomata the following materials are exchanged

i. CO₂
ii. O₂
iii. water vapour
iv. All of the above

11] Which one of the following statements is correct about the human circulatory system?

i. Blood transports only oxygen and not carbon dioxide.
ii. Human heart has five chambers.
iii. Valves ensure that the blood does not flow backwards.
iv. Both oxygen-rich and oxygen-deficient blood gets mixed in the heart.

12] How much energy is released from hydrolysis of terminal phosphate of one mole of ATP?

i. 30.5 J/mole
ii. 3.05 J/mole
iii. 30.5 kJ/mole
iv. 305 kJ/mole

13] An athlete complaint of muscle pain after rigorous physical workout. What could be probable reason for it?

i. Muscle cell damage
ii. Accumulation of lactic acid
iii. Accumulation of ethanol
iv. He is tired

14] Haemoglobin is responsible for the transportation of

i. oxygen only
ii. carbon dioxide only
iii. both oxygen and carbon dioxide
iv. only responsible for red coloration of the blood

15] Ascent of sap through xylem is an

i. active process
ii. passive process
iii. both active and passive process
iv. None of the above

16] Transpiration is a necessary evil because?

i. It generates transpirational pull
ii. It leads to loss of water
iii. Both (i) and (ii)
iv. It is a wasteful process but unavoidable

17] In plants, which of the following structures help in excretion?

i. Vacuole
ii. Leaf
iii. Stomata
iv. All of the above

18] Nephrons, the structural and functional unit of human kidney, are composed of?

i. Renal corpuscle
ii. Proximal convulated tubule
iii. Distal convulated tubule
iv. All of the above

19] Where do the major reabsorption of solutes like glucose, amino acids, salts and a major amount of water takes place in human kidney from the filtrate?

i. Renal corpuscle
ii. Proximal convulated tubule
iii. Distal convulated tubule
iv. Loop of Henle

20] Which of the following statements are true?

(a) Sudden action in response to something in the environment is called reflex action.
(b) Sensory neurons carry signals from spinal cord to muscles.
(c) Motor neurons carry signals from receptors to spinal cord.
(d) The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc.

i. (a) and (b)
ii. (a) and (c)
iii. (a) and (d)
iv. (a), (b) and (c)

21] In humans, the life processes are controlled and regulated by

i. reproductive and endocrine systems
ii. respiratory and nervous systems
iii. endocrine and digestive systems
iv. nervous and endocrine systems

22] A doctor advised a person to take an injection of insulin because

i. his blood pressure was low
ii. his heart was beating slowly
iii. he was suffering from goitre
iv. his sugar level in blood was high

23] Dramatic changes of body features associated with puberty are mainly because of secretion of

i. oestrogen from testes and testosterone from ovary
ii. estrogen from adrenal gland and testosterone from pituitary gland
iii. testosterone from testes and estrogen from ovary
iv. testosterone from thyroid gland

24] Which of the following statements about transmission of nerve impulse is incorrect?

i. Nerve impulse travels from dendritic end towards axonal end.
ii. At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron.
iii. The chemicals released from the axonal end of one neuron cross the synapse and generate a similar in a dendrite of another neuron.
iv. A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells.

25] Select the mis-matched pair:

i. Adrenaline: Pituitary gland
ii. Testosterone: Testes
iii. Estrogen: Ovary
iv. Thyroxin: Thyroid gland

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