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94951.

Raghu was an Indian farmer during the 1950s. Which of the following institutional reforms would he have witnessed in the 1950s? A. package technology being used in agriculture B. Kissan Credit Card (KCC) being launched C. establishment of the Grameen banksD. abolition of the zamindari system

Answer»

D. abolition of the zamindari system

94952.

Which of the following statements is FALSE about the first half of 19th century Europe? A. There were parts of Europe where the aristocracy still enjoyed power. B. There was a migration of people from rural to urban areas. C. Women stepped outside their homes to work. D. The population decreased all over Europe.

Answer»

D. The population decreased all over Europe.

94953.

Kamal uses high yielding variety (HYV) seeds and chemical fertilisers to increase his wheat production. Which type of farming is Kamal practicing? A. intensive subsistence farming B. primitive subsistence farming C. commercial farming D. organic farming

Answer»

C. commercial farming

94954.

a)Collenchymab)Schlerenchymac)Chlorenchymad)Parenchyma

Answer»

Mechanical tissue consisting of living cells is Collenchyma.

94955.

a)Store food materialsb)Synthesize foodc)Absorb moistured)Conduct food materials

Answer»

a) Store food materials

94956.

In relation to Indian industries entrepreneurship is(A) Necessary (B) Unnecessary(C) Burden (D) Wastage of time and money

Answer»

In relation to Indian industries entrepreneurship is Necessary. 

94957.

Elements of innovation according to E.S.Meed(A) 4 (B) 2(C) 6 (D) 8

Answer»

Elements of innovation according to E.S.Meed 4.

94958.

A portion of the transverse section of maize stem is shown in the diagram. Label a, b, c, d, e, f, g, h and i.

Answer»

1. a – Cuticle 

2. b – Epidermis 

3. c – Sclerenchymatous hypodermis 

4. d – Sclerenchymatous sheath 

5. e – Parentchymatous sheath 

6. f – Phloem 

7. g – Metaxylem 

8. h – Protoxylem

9. i – Water cavity.

94959.

Identify the following diagram and write its function.

Answer»

Hydathode. It is the pore found in the vein ending of the grass leaf through which water loss occurs in the form of droplets.

94960.

Which of the following condition of xylem is present in both monocot and dicot stems (a) exarch (b) endarch (c) polyarch(d) mesarch

Answer»

Endarch is present in both monocot and dicot stems

94961.

While doing anatomy practical, students observe ten following characters: Undifferentiated ground tissue. Numerous vascular bundles and are scattered. Sclerenchymatous hypodermis Presence of bundle sheath1. Identify the material. 2. Write any one example of a plant having such characters.

Answer»

1. Monocot stem. 

2. Grass/Bamboo

94962.

Distinguish between cork cambium and vascular cambium.

Answer»

1. Cork cambium is the meristematic layer that cut of the tissues outside called phellem and inside phelloderm. 

2. Vascular cambium is the meristematic layer that cut of the tissues outside called secondary phloem and inside secondary xylem.

94963.

Give reason 1. Grittiness nature of sapota fruit pulp 2. Increase thickness of stem intake and not in coconut

Answer»

1. Due to the presence of nonelogated sclerenchyma tissues (sclereids) 

2. In Teak, cambium is present (dicot plant) In coconut, cambium is absent because it is a monocot plant. Cambial activity causes an increase in thickness

94964.

Differentiate the following characters of dicot stem and monocot stem. Differentiated cortex, Protoxylem lacuna present, open bundle, bundle sheath, starch sheath, sclerenchymatous hypodermis, scattered bundles, V.Bs. arranged in a ring, closed bundles, phloem parenchyma absent, presence of pith, collenchymatous hypodermis.

Answer»
 Dicot stem Monocot stem
 Differentiated cortex Protoxylem lacuna present
 Open bundle Bundle sheath
 Starch sheath Closed bundle
 V.Bs arranged in ringPhloem parenchyma absent
Presence of pithSclerenchymatous hypodermis
collenchymatous hypodermis
94965.

Analyse the table and arrange the matter in an appropriate order.     A      B       CMonocot stemBulliform cellsCasparian thickeningIsobilateral leafClosedSecondary thickeningDicot rootOpenEpidermisDicot stemRadialProtoxylem lacuna

Answer»
     A      B       C
Monocot stemClosedProtoxylem lacuna
Isobilateral leafBulliform cellsEpidermis
Dicot rootRadialCasparian thickening
Dicot stemOpenSecondary thickening
94966.

Classify the following characters under dicot and monocot stem? Bundle sheath is present, open bundle, bundle cap is present, closed bundle, arranged in a broken ring, scattered bundle, collenchymatous hypodermis, sclerenchymatous hypodermis.

Answer»
    Dicot stem    Monocot stem
 Open bundle Bundle sheath is present
 Bundle cap is present Closed bundle
 Arranged in a broken ring Scattered bundle
 collenchymatous Sclerenchymatous
 Hypodermis Hypodermis
94967.

Match the following.    A     B     C1.guard cellSuberinStem2. conjointStomataCasparian stripe3. endodermisVascular bundleSubsidiary cell

Answer»
    A     B     C
1.guard cellStomataSubsidiary cell
2. conjointVascular bundleStem
3. endodermisSuberinCasparian stripe
94968.

Analyse the table and arrange the matter is an appropriate order.       A       B            CMonocot stemBullliform cellsCasparian thickningDicot stemRadialProtoxylem lacunaeIsobilateral leafClosedSecondary thickeningDicot root OpenEpidermits

Answer»
       A       B            C
Monocot stemClosedProtoxylem lacunae
Dicot stemOpenSecondary thickening
Isobilateral leafBullliform cellsEpidermits
Dicot root RadialCasparian thickning
94969.

You may have observed droplets of water at the tip of leaves of grasses during early morning. Your sister told it is a dewdrop. As a science student do you agree with her? Explain. Compare this process with transpiration.

Answer»

No. 

1. The droplets of water are found in the tip of grass leaves. This is called Guttation. It occurs in early morning. 

2. Water drops come out from Hydathode seen in the vein endings of leaf. 

3. Transpiration is the loss of water in the form of water vapour from stomata of leaves.

94970.

Plant growth is indeterminate in most plants it can go on indefinitely at the tips of roots and shoots. Special types of tissues are located at these regions 1. Name those tissues 2. Classify these tissues based on the position and origin.

Answer»

1. Meristematic tissues 

2. Based on the position they are classified into three types,  

  • apical meristem 
  • intercalary meristem and 
  • lateral meristem 

Based on the origin, they are classified into 

1. primary meristem and 

2. Secondary Meristem

94971.

Activity of cambium is different in two seasons and xylem vessels formed have narrow and wider lumens. Give the type of wood formed during the different seasons.

Answer»

Springwood and autumn wood.

94972.

During the secondary thickening of a dicot stem, from the outer cotical region, a meristematic tissue is developed. Name this tissue and write the function of it.

Answer»

Phellogen/cork cambium – It produces phellum towards the outer sides & phelloderm towards the inner side. These 3 layers are known as periderm

94973.

Ramu observed the growth of a plant in his garden. He realised that the plant grow both in length and width. Name the tissue responsible for the growth of the plant.

Answer»

The tissue responsible for the growth of the plant is Meristems

94974.

Identify the following materials under microscope. 1. Xylem polyarch, Round vessels, homogenous cortex with xylem & phloem in radial manner. 2. Endarch xylem, conjoint bundle, surrounded by bundle sheath, palisade and spongy tissues distinguished and kidney-shaped guard cells

Answer»

1. Monocot root 

2. Dicot leaf

94975.

The transverse section of a plant material shows the following anatomical features. 1. vascular bundles are conjoint, scattered and surrounded by a sclerenchymatous bundle sheath. 2. Phloem parenchyma is absent. What will you identify as?

Answer»

The plant is a monocotyledon.

94976.

A cross-section of plant materials show the following anatomical features under microscope. 1. Vascular bundles are radially arranged 2. Four xylem strands with exarch condition of the protoxylem. To which organ should it be assigned?

Answer»

It is assigned to Dicot root. 

94977.

Some anatomical details of material are given below vascular bundles are conjoint and open, medullary rays are present, hypodermis collenchymatous, cortex heterogenous 1. Identify the material 2. Name the tissue given above from which interfascicular cambium develops during secondary growth.

Answer»

1. Dicot stem 

2. Medullary ray

94978.

What is the stomatal apparatus? Explain the structure of stomata with a labelled diagram.

Answer»

Stomata are structures present in the epidermis of leaves. Stomata regulate the process of transpiration and gaseous exchange. Each stomata is composed of two bean-shaped cells known as guard cells. In grasses, the guard cells are dumbbell-shaped.

The outer walls of guard cells (away from the stomatal pore) are thin and the inner walls (towards the stomatal pore) are highly thickened. The guard cells possess chloroplasts and regulate the opening and closing of stomata.

94979.

The transverse section of a plant material shows the following anatomical features 1. the vascular bundles are conjoint, scattered and surrounded by a sclerenchymatous bundle sheath.2. phloem parenchyma is absent. What will you identify as?

Answer»

As is clear from above TS of monocot stem vascular bundles are scattered in monocot stems and phloem parenchyma is absent.

94980.

Name the three basic tissue systems in the flowering plants. Give the tissue names under each system.

Answer»

On the basis of their structure and location, there are three types of tissue systems: 

1. Epidermal Tissue System. Epidermis, Stomata. 

2. Ground or Fundamental Tissue System Parenchyma, Sclerenchyma and Collenchyma. 

3. Vascular or conducting Tissue System. Phloem and Xylem.

94981.

Who said that different forms of lilfe have evolved from use and disuse of organs? (a) Alfred Wallace (b) Darwin (c) Lamarck (d) Miller

Answer»

Lamarck  said that different forms of lilfe have evolved from use and disuse of organs

94982.

A Russian scientist conducted experiments and found that even the thought of food will water your mouth. Name the scientist.

Answer»

Ivan Pavlov.

94983.

The total entropy change for a system and its surroundings increases, if the process is(a) reversible (b) irreversible (c) exothermic (d) endothermic. 

Answer»

(b) irreversible 

94984.

Which of the following statements is true ? The entropy of the universe (a) increases and tends towards maximum value (b) decreases and tends to zero (c) remains constant (d) decreases and increases with a periodic rate. 

Answer»

(a) increases and tends towards maximum value

94985.

In which of the following, the entropy decreases ? (a) Crystallisation of sucrose from solution (b) Rusting of iron (c) Melting of ice (d) Vaporization of camphor. 

Answer»

(a) Crystallisation of sucrose from solution 

94986.

The key to environmental protection is to prevent the degradation of the _________ which is important for all living creatures.a) Natural environment b) Greenery c) Green Tourism d) None of the above

Answer»

a) Natural environment

The key to environmental protection is to prevent the degradation of the Natural environment which is important for all living creatures.

94987.

To pass things from father to son is the same as to ______ down from generation to generation. A) calm B) hand C) climb

Answer»

Correct option is B) hand

94988.

To let something become less hot is the same as to let it ______ down. A) lie B) cool C) tone

Answer»

Correct option is B) cool

94989.

To have a lot of stress is similar to being ______ down by a lot of problems. A) poured B) cut C) weighted

Answer»

Correct option is C) weighted

94990.

Arrange the jumbled parts to make meaningful sentences.1. it is not advisable / as it is / for us to ( go out / raining heavily2. why I had returned / the previous night / asked me / home late / my father3. her cat had to be operated upon / a plastic bag / the veterinary doctor / informed that / as she had swallowed

Answer»

1. It is not advisable for us to go out as it is raining heavily. ?

2. My father asked me why I had returned home late the previous night.

3. The veterinary doctor informed that her cat had to be operated upon as she had swallowed a plastic bag.

94991.

Oh, it's raining heavily. - _____. - Let's hide somewhere. A) I think it's 20 degrees above zero. B) Cold weather has set in. C) Oh, yes, it's raining cats and dogs. D) The sky is so overcast. E) It looks like to rain.

Answer»

Correct option is C) Oh, yes, it's raining cats and dogs.

94992.

If it is raining very heavily, it is the same as to ______ down rain. A) pourB) cut C) tear

Answer»

Correct option is A) pour

94993.

List the steps taken by the captain (i) to protect the ship when rough weather began. (ii) to check the flooding of the water in the ship.

Answer» (i) In order to protect the ship from rough weather, the capitan decided to slow it down. So he dropped the storm jjb and lashed heavy mooring rope in a loop across the stern. Then they doubled fastened everything and went through their life-raft drill. They also attached lifelines and wore life jackets. Thus they got ready to face the storm.
(ii)To check the flooding of water in the ship,he took a canvas and stretched it across the holes and made a waterproof hatch cover across the gaping holes which diverted the water to the side. When the two hands pump blocked and electric pump short circuited, he found another electric pump, connected it to an outpipe and started it.
94994.

Indole acetic acid generally inhibits the growth of (1) Roots (2) Leaves (3) Shoots (4) Plants in general

Answer»

Indole acetic acid generally inhibits the growth of Roots.

94995.

Opening of floral buds into flowers, is a type of:(1) Autonomic movement of growth (2) Autonomic movement of locomotion (3) Autonomic movement of variation (4) Paratonic movement of growth

Answer»

(1) Autonomic movement of growth 

94996.

Which type of movement is found in leaves of members of Leguminosae ? (1) Thermonastic (2) Photonastic (3) Nyctynastic (4) All the above

Answer»

(4) All the above

94997.

Automatic movement of variation can be seen in(1) Mimosa pudica (2) Desmodium gyrans (3) Both of above (4) Acacia arabica

Answer»

(2) Desmodium gyrans

94998.

Enter A) get in B) desert C) abandon D) quit

Answer»

Correct option is A) get in

94999.

Movement due to external stimuli is known of- (1) Autonomic movement(2) Paratonic movement (3) Ameboid movement (4) Excretory movement

Answer»

(2) Paratonic movement

95000.

Parthenocarpic tomato fruits can be produced by?(1)raising the plants from vernalized seeds (2) treating the plants with phenylmercuric acetate (3) removing androecium of flowers before pollen grains are released (4) treating the plants with low concentrations of gibberellic acid and auxins 

Answer»

(4) treating the plants with low concentrations of gibberellic acid and auxins