Test 5 (Class 11) - Type Recall (Old NCERT)

Biology 1 - Section A

1.

Auxins:

I:	promote flowering in pineapples
II:	induce parthenocarpy in tomatoes
III:	like 2,4-D kill monocot weeds
IV:	control xylem differentiation

1.	Only I and II are correct
2.	Only III is incorrect
3.	I, II, III and IV are correct
4.	Only I and IV are incorrect

2.

With regard to the Biological Nitrogen Fixation by Rhizobium in association with soyabean, which one of the following statement/statements does not hold true?
1. Nitrogenase may require oxygen for its functioning .
2. Nitrogenase is MO-Fe protein.
3. Leg-hemoglobin is a pink coloured pigment.
4. Nitrogenase helps to convert $N_{2}$ gas into two molecules of ammonia.

3.

Phloem transport differs from xylem transport as:

1.	Xylem transport requires active pumping at stomata, transport in phloem is passive.
2.	Phloem movement is solar powered, xylem movement occurs best in dark.
3.	Phloem carries fluid from the soil to the leaves, while xylem is the reverse.
4.	Phloem can reverse direction, depending on the activity of the "source" and "sink" of its materials but the flow in xylem is essentially unidirectional.

4. The following equation shows the complete oxidation of tripalmitin [a fatty acid] during cellular respiration. Calculate the RQ:
$2(C_{51}H_{98}O_6)+145O_2\longrightarrow \\102CO_2+98H_2O+\text{energy}$

1.	0.7	2.	0.9
3.	1.0	4.	4.0

5.

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):

Assertion (A):	Plants retain the capacity for unlimited growth throughout their life.
Reason (R):	Plants have meristems at certain locations in their body.

In the light of the above statements choose the correct answer from the options given below:

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False.

6. When the ratio, CO₂: O₂ is nearly equal, RuBisCO:
1. has no affinity for oxygen
2. has a much greater affinity for carbon dioxide
3. has a much greater affinity for oxygen
4. has equal affinity for both carbon dioxide and oxygen

7.

The diagram shows the famous Engelmann experiment that helped us understand important aspects of the process of photosynthesis. What conclusion can be drawn by the pattern of accumulation of aerobic bacteria shown in the diagram?

1.	Excess carbon dioxide is released by the alga in the area of accumulation.
2.	Only red and violet lights are effective for photosynthesis.
3.	In the areas of accumulation, most oxygen was liberated by the alga.
4.	Bacteria are attracted to red and blue light.

8. Control points where a plant adjusts the quantity and types of solutes that reach the xylem are:
1. Suberised casparian strips in the endodermis
2. Sclerenchyma of the pericycle
3. Transport proteins of endodermal cells
4. Root hair cells

9.

The net gain of number of ATP molecules during glycolysis will be:

1. 2	2. 4
3. 6	4. 8

10. Molybdenum is a component of:
I. Nitrogenase
II. Nitrate reductase
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II

11.

The movement of water through the root layers is ultimately:

1. apoplastic along the walls	2. active transport by porins
3. symplastic in the endodermis	4. symplastic in the xylem

12.

Oxygen, during oxygenic photosynthesis, is produced during:
1. cyclic photophosphorylation
2. the light-dependent reactions involving photosystems I and II
3. Calvin cycle
4. the Krebs cycle

13. A C₃plant was provided carbon dioxide labelled with a radioactive isotope. The amount of radioactivity was measured in chloroplasts. In which of the following molecules do you expect the radioactivity to appear first as the process of photosynthesis proceeds in this plant?

1.	OAA	2.	PEP
3.	PGA	4.	RuBP

14.

The products of fermentation do not include:

1.	CO₂	2.	O₂
3.	ethanol	4.	lactate

15.

In a guard cell:
I. The outer walls are thick and elastic
II. Cellulose microfibrils are oriented longitudinally
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

16.

Oxygen drives the process of ATP production via ETS. The best explanation for this would be that oxygen:
1. is needed at the end of the aerobic respiration
2. is the terminal electron donor
3. is not required in the glycolytic pathway
4. acts as the final hydrogen acceptor

17. Which gaseous PGR is synthesised in large amounts by tissues undergoing senescence and ripening fruits

1.	ABA	2.	IAA
3.	Ethylene	4.	GA

Biology 1 - Section B

18.

Villi are supplied with a network of capillaries and a large lymph vessel called the:

1. Portal vessel	2. Lacteal
3. Thoracic duct	4. Cisterna chyli

19.

The causes of indigestion include all except:
1. parasympathetic stimulation
2. anxiety
3. food poisoning
4. eating spicy food

20.

The formation of oxy-hemoglobin at the alveoli is favored by all the following except:

1. High pO₂	2. Low pCO₂
3. Lower H⁺ ion concentration	4. Higher temperature

21. Study the given figure and select the correct match from the options given below:

A.	Serosa	It is called as endomysium
B.	Muscularis	Has an inner circular and outer longitudinal layer
C.	Submucosa	Lacks blood supply
D.	Mucosa	Epithelial lining modified in various parts

1. Only A and B	2. Only B and D
3. Only A and C	4. Only B and C

22. Consider the given two statements:

I:	Lower invertebrates like sponges, coelenterates and flatworms exchange oxygen with carbon dioxide by simple diffusion over their entire body surface.
II:	Fishes are the only vertebrates that do not use lungs as respiratory organs.

1.	Only I is correct	2.	Only II is correct
3.	Both I and II are correct	4.	Both I and II are incorrect

23.

Hormonal control of the secretion of digestive juices is carried out by:
1. local hormones produced by the gastric and intestinal mucosa
2. hypothalamic hormones
3. hormones of the anterior pituitary gland
4. hormones of adrenal cortex

24.

The figure shows pulmonary volumes as measured on a spirometer. Which of the following will be true?

I:	A+B = Inspiratory Reserve Volume
II:	C+D = Functional Residual Capacity
III:	B+C = Tidal Volume
IV:	[(A+B+C+D) – (A+B+C)] = Residual Volume

1. Only II is correct
2. Only II and IV are correct
3. Only I and III are correct
4. I, II, III and IV are correct

25.

True seed dormancy:
1. is caused by conditions within the seed that prevent germination under normally ideal conditions.
2. is caused by unfavourable environmental conditions.
3. is seen in all seeds.
4. does not have any evolutionary significance.

Biology 2 - Section A

26.

In hemodialysis, the role of artificial kidney is actually played by:

1.	Dialysate	2.	Blood pump
3.	Water system	4.	Cellulose membrane

27.

Consider the two statements:

I:	The process of filtration at Malpighian body is regarded as ultrafiltration.
II:	Blood is filtered so finely that all constituents of plasma pass into the lumen of Bowman’s capsule.

1.	Both I and II are correct and II explains I
2.	Both I and II are correct but II does not explain I
3.	I is correct but II is incorrect
4.	I is incorrect but II is correct

28.

The dark and light bands seen as striations in a skeletal muscle are located on:

1.	Myofilaments	2.	Muscle fiber
3.	Myofibril	4.	Motor unit

29.

Protonephridia are the excretory structures in all the following except:

1. Planaria	2. Rotifers
3. Amphioxus	4. Prawns

30.

Consider the two statements:

I:	Electric synapses are rare in our system.
II:	Impulse transmission across electric synapse is always faster than across a chemical synapse.

1. Both I and II are correct and II explains I
2. Both I and II are correct and II does not explain I
3. Only I is correct
4. Only II is correct

31.

A canal called the cerebral aqueduct passes through the:

1. Cerebral hemispheres	2. Diencephalon
3. Mid brain	4. Hind brain

32.

The peripheral chemoreceptors are:
1. more sensitive to a decrease in ${PCO}_{2}$ than to a decrease in ${PO}_{2}$
2. stimulated by hypocapnia
3. located in the medulla oblongata of the brain stem
4. more sensitive to a decrease in ${PO}_{2}$ than to a decrease in ${PCO}_{2}$

33.

The region of human kidney where you expect to find maximum osmolarity is:
1. at the top of the renal cortex
2. at the bottom of the renal cortex
3. at the top of the renal medulla
4. at the bottom of the renal medulla

34.

The axial skeleton in human beings include:
1. skull, vertebral column, hyoid bone and rib cage
2. arms, legs, and pelvic girdle
3. skull and pectoral girdle
4. sternum, rib cage, vertebral column, and pelvic girdle

35.

The joint between atlas and axis vertebra is classified as:

1.	Saddle joint	2.	Pivot joint
3.	Gliding joint	4.	Hinge joint

36.

Passive filling accounts for about what percent of ventricular filling?

1.	30	2.	50
3.	70	4.	90

37.

When anti B antibodies are present in the plasma and A antigens on the surface of RBCs of a person, her blood group can be:

1.	A and AB	2.	Only A
3.	Only B	4.	O

38. The ‘double circulation’ of humans includes:
I: Systemic circulation
II: Coronary circulation
III: Pulmonary circulation
IV: Portal circulation

1.	I and III only	2.	I and II only
3.	II and IV only	4.	II and III only

39.

Above the rows of hair cells of Organ of Corti, there is a thin elastic membrane called:

1. Reissner’s membrane	2. Basilar membrane
3. Tectorial membrane	4. Tympanic membrane

40. Consider the following two statements:

I:	Repeated activation of muscles can lead to fatigue.
II:	Repeated activation of muscles can lead to accumulation of lactic acid.

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct

41. Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):

Assertion (A):	Neurons are excitable cells.
Reason (R):	Their membranes are in a polarised state.

In the light of the above statements choose the correct answer from the options given below:

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	(A) is False but (R) is True.

42.

In a normal ECG, The T wave represents:

1.	ventricular depolarization	2.	atrial repolarization
3.	ventricular repolarization	4.	atrial depolarization

Biology 2 - Section B

43.

Photopigments in the human eye are composed of:
1. a lipid and an ester of vitamin A
2. a protein and an ester of vitamin A
3. a lipid and an aldehyde of vitamin A
4. a protein and an aldehyde of vitamin A

44. Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):

Assertion (A):	Once initiated, the action potential has a magnitude that is independent of the strength of the triggering stimulus.
Reason (R):	Action potentials are all or none responses to stimuli.

In the light of the above statements choose the correct answer from the options given below:

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False.

45.

The definition of hormone describes them as having all the following features except:
1. non-nutrient chemicals
2. intra-cellular messengers
3. produced in trace amounts
4. act on distant target organ

46. All the following hormones are produced by anterior pituitary except:

1.	Gonadotropins	2.	ACTH
3.	Prolactin	4.	Melatonin

47.

Thymus:

I:	is located ventral to the heart/aorta
II:	plays a major role in differentiation of T-lymphocytes
III:	promotes production of antibodies
IV:	enlarges with age

1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct

48.

Match each item in Column I [Hormone] with one in Column II [Function] and select your answer from the codes given:

	Column I		Column II
A.	ADH	a.	Makes collecting duct permeable to water and urea
B.	PTH	b.	Stimulates osteoclasts
C.	LH	c.	Rupture of Graafian follicle leading to ovulation
D.	ANF	d.	Causes vasodilation

Codes:

	A	B	C	D
1.	a	b	c	d
2.	a	b	d	c
3.	b	a	d	c
4.	b	a	c	d

49.

All the following are common second messengers involved in hormonal actions except:
1. Cyclic adenosine monophosphate
2. Inositol phosphate
3. Prostaglandins
4. Calcium

50. The pineal gland:

I:	helps in maintaining the normal rhythms of sleep-wakefulness cycle and body temperature.
II:	influences metabolism, pigmentation and the menstrual cycle.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

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