NEET Test Series-2021/NEET Biology MCQS Mock Test Paper 35 Sample Test,Sample questions

Question:
 Which of the following combination of hormones will promote differentiation of shoot as well as root in tissue culture?

1. Gibberellin and abscisic acid

2. Auxin and abscisic acid

3. IAA and gibberellin

4. Auxin and cytokinin

Posted Date:-2021-02-22 06:35:03


Question:
. Movement of water through apoplast stops at the level of ________ and crosses membrane to undergo symplast till xylem cells

1.starch sheath

2.inner layer of cortex

3.endodermis

4.all of the above

Posted Date:-2021-02-22 06:35:03


Question:
A common phycobiont in lichens are

1. Cetraria

2.Microcystis

3. Trebouxia

4.Oedogonium

Posted Date:-2021-02-22 06:35:03


Question:
Amino acids with aromatic side chain are

1. tryptophan, asparagine, tyrosine

2.tryptophan, threonine, tyrosine

3.phenylalanine, tryptophan, serine

4.phenylalanine, tryptophan, tyrosine

Posted Date:-2021-02-22 06:35:03


Question:
An amino acid yielding acetyl CoA during catabolism is

1. ketogenic

2.glucogenic

3.essential

4. both glucogenic and ketogenic

Posted Date:-2021-02-22 06:35:03


Question:
Animals lacking excretory, respiratory and circulatory structures are

1.Sponges

2. Tapeworms

3. Liver fluke

4. Threadworms

Posted Date:-2021-02-22 06:35:03


Question:
Auxin is transported polarly. Mostly, auxin movement is

1.acropetal

2.basipetal

3.centripetal

4.both (a) and (c)

Posted Date:-2021-02-22 06:35:03


Question:
 Amino acids are mostly synthesised from

1. fatty acids

2. mineral salts

3.𝜶-­ketoglutaric acid

4.volatile acids

Posted Date:-2021-02-22 06:35:03


Question:
 Amino acids with the aliphatic ‘R’ group are

1.Glycine, alanine, leucine

2.Serine, threonine, cysteine

3.Lysine, arginine, histidine

4.Phenylalanine, tyrosine and tryptophan

Posted Date:-2021-02-22 06:35:03


Question:
 Application of ________ can delay abscission of fruits and leaves at early stages

1.gibberellic acid

2.ethylene

3. auxin

4. cytokinin

Posted Date:-2021-02-22 06:35:03


Question:
 In plants, water movement is

1. up the potential gradient in both symplast and apoplast

2. down the potential gradient in apoplast and up the potential gradient in symplast

3.down the potential gradient in both symplast and apoplast

4.down a potential gradient in symplast and up the potential gradient in apoplast

Posted Date:-2021-02-22 06:35:03


Question:
 In roots, most of the water flows through

1.Symplast

2.Apoplast

3. Imbibition

4.Active transport

Posted Date:-2021-02-22 06:35:03


Question:
 Pressure in roots develops due to

1.) low osmotic soil potential

2. rise in transpiration

3.active absorption

4.passive absorption

Posted Date:-2021-02-22 06:35:03


Question:
 Reindeer moss is a lichen known as

1. Usnea

2.Rocella

3. Cladonia

4. Parmelia

Posted Date:-2021-02-22 06:35:03


Question:
 Symplastic movement is slower than apoplastic movement because

1. molecule has to enter through cell membrane

2.it is down the gradient

3. as it involves cytoplasmic streaming always

4. all of the above

Posted Date:-2021-02-22 06:35:03


Question:
 The group of animals to which Sycon belongs can be best described as

1. Multicellular having tissue organization, but not a body cavity

2.Unicellular or acellular

3.Multicellular with a gastrovascular cavity

4.Multicellular without any tissue organization

Posted Date:-2021-02-22 06:35:03


Question:
 The simplest amino acid is

1. Glycine

2.Alanine

3.Asparagine

4.Tyrosine

Posted Date:-2021-02-22 06:35:03


Question:
 These are ‘multicellular grade’ entity

1.Vertebrates

2.Sponges

3.Prokaryotes

4.Coelenterates

Posted Date:-2021-02-22 06:35:03


Question:
 This about lichens is incorrect

1.Lichens are indicators of pollution

2.They grow rapidly about 2cm every day

3.Some species are eaten by reindeers

4.They have symbiotic relationship between alga and fungus

Posted Date:-2021-02-22 06:35:03


Question:
 This is a crustose lichen

1.Peltigera

2.Usnea

3.Rhizocarpon

4. None of the above

Posted Date:-2021-02-22 06:35:03


Question:
 This lichen is pioneer in xerosere

1. fruticose lichen

2. foliose lichen

3.crustose lichen

4.leprose lichen

Posted Date:-2021-02-22 06:35:03


Question:
 Uneven distribution of _______ results in phototropic curvature

1. phytochrome

2. auxin

3.gibberellin

4.cytokinin

Posted Date:-2021-02-22 06:35:03


Question:
 Which of the following amino acids is not necessary to be taken in the diet?

1.histidine

2.threonine

3.serine

4.lysine

Posted Date:-2021-02-22 06:35:03


Question:
 Which one of these is commonly used synthetic auxin?

1.NAA

2.IAA

3. IBA

4. GA

Posted Date:-2021-02-22 06:35:03


Question:
 _____________ is the name of the dried skeleton of ‘Venus flower basket’

1. Euplectella

2.Euspongia

3. Leucosolenia

4. Spongila

Posted Date:-2021-02-22 06:35:03


Question:
Collared, flagellated cells that cover large parts of the inner chambers of sponges, helping water circulation to continue are

1.Porocytes

2.Choanocytes

3. Amoebocytes

4. Pinacocytes

Posted Date:-2021-02-22 06:35:03


Question:
Commonly applied hormone in tea plantation is

1.abscisic acid

2. ethylene

3.indole-­3-­acetic acid

4. zeatin

Posted Date:-2021-02-22 06:35:03


Question:
Epimorphosis is regeneration through

1.The repatterning of existing cells as seen in hydra

2. The reinitiation of division in existing cells, followed by patterning, as occurs in amphibians such as newts

3. The repatterning of existing cells as seen in amphibians

4.The reinitiation of embryonic growth from remaining cells as seen in Hydra

Posted Date:-2021-02-22 06:35:03


Question:
Find the incorrect match

1. Abscisic acid ­- Stomatal closure

2. IAA ­- Cell wall elongation

3.Cytokinin ­- Cell division

4.Gibberellic acid ­- Leaf abscission

Posted Date:-2021-02-22 06:35:03


Question:
Flowering can be induced in pineapple by application of

1. Abscisic acid

2.NAA, 2,4­-D

3.Phenylacetic acid

4.Cytokinin

Posted Date:-2021-02-22 06:35:03


Question:
In plants, this about apoplast and symplast water movement is true

1.being down a potential gradient

2.an equal rate of transport

3. conduction through interconnected protoplasts

4.assistance by cytoplasmic streaming

Posted Date:-2021-02-22 06:35:03


Question:
In the studies on the atmospheric pollution, lichens are important as they

1. can readily multiply in polluted atmosphere

2. are very sensitive to pollutants

3. efficiently purify the atmosphere

4.can also be grown in greatly polluted atmospherE

Posted Date:-2021-02-22 06:35:03


Question:
Ability to give rise to a new individual entity from body parts is

1.Reproduction

2. Fragmentation

3. Regeneration

4.Fission

Posted Date:-2021-02-22 06:35:03


Question:
Majorly, lichens are the pollution indicators of

1.CO

2.Mercury

3.NO2

4.SO2

Posted Date:-2021-02-22 06:35:03


Question:
Members of phylum Porifera are

1.Mostly freshwater animals but few are marine entities

2. Mostly marine animals but few are freshwater entities

3. Exclusively freshwater animal

4.Exclusively marine animals

Posted Date:-2021-02-22 06:35:03


Question:
Most of the movement in roots through apoplast is due to

1.endodermal cells are loosely packed and hence no resistance to water movement

2.medullary cells are loosely packed and hence no resistance to water movement

3. cortical cells are loosely packed and hence no resistance to water movement

4.pericycle cells are loosely packed and hence no resistance to water movement

Posted Date:-2021-02-22 06:35:03


Question:
Most of the scientists deem the algal-fungal relationship in lichens as helotism. Helotism is a

1.master-master relationship

2.master-slave relationship

3. a kind of mutualism

4. a kind of symbiotic association

Posted Date:-2021-02-22 06:35:03


Question:
Pick the incorrect statement regarding apoplast movement

1. movement of water is through mass flow

2.gradient-dependant

3. mass flow of water takes place as a result of cohesive and adhesive properties of water

4.continuous water stream gets tension when water is absorbed by root hairs

Posted Date:-2021-02-22 06:35:03


Question:
Regeneration of a limb or tail is an example of

1. Epimorphosis

2.Autotomy

3.Compensatory hypertrophy

4. Morphallaxis

Posted Date:-2021-02-22 06:35:03


Question:
Removal of apical bud results in

1.more axillary buds

2. flowering ceases

3.more lateral branches

4.plant growth ceases

Posted Date:-2021-02-22 06:35:03


Question:
The first amino acid of any polypeptide chain in eukaryotes is

1.valine

2. methionine

3. glycine

4.alanine

Posted Date:-2021-02-22 06:35:03


Question:
The naturally occurring proteins consist of

1. D-amino acids

2. L-amino acids

3.both (a) and (b)

4.none of these

Posted Date:-2021-02-22 06:35:03


Question:
The symbiotic association of algae and fungi is known as

1.Mycorrhiza

2. lichen

3.Mycoplasma

4.Both (a) and (b)

Posted Date:-2021-02-22 06:35:03


Question:
The Avena curvature test is an accurate bioassay for

1. ABA

2.GA3

3. IAA

4.Ethylene

Posted Date:-2021-02-22 06:35:03


Question:
This about sponges is true

1. one mouth, innumerable exits

2.innumerable mouths, one exit

3.large spacious stomach

4. spicules are composed of chitin

Posted Date:-2021-02-22 06:35:03


Question:
This is not part of apoplast

1. cell walls

2. vessels

3. intercellular spaces

4.sieve tubes

Posted Date:-2021-02-22 06:35:03


Question:
Vegetative reproduction in lichens takes place by

1. isidia

2. soredia

3. fragmentation

4.all of the above

Posted Date:-2021-02-22 06:35:03


Question:
Which among the following is not polymeric?

1.Carbohydrates

2.Nucleic acids

3. Proteins

4. Lipids

Posted Date:-2021-02-22 06:35:03


Question:
Which of the following amino acids has to be supplemented in the diet?

1. phenylalanine

2.cysteine

3. glutamine

4. asparagine

Posted Date:-2021-02-22 06:35:03


Question:
Which of the following statements does not hold true in context of apoplast?

1.occurs through intercellular spaces and cell walls

2.system of adjacent cell walls is continuous all through the plant

3. crosses cell membrane

4.discontinuous path at the place of casparian strips of endodermis in roots

Posted Date:-2021-02-22 06:35:03


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