R4RIN – MCQs, Mock Tests | NEET Test Series-2021 to 2022 NEET Biology MCQS Mock Test Paper 7

Pneumatophores show

1. thigmotropism
2. negative phototropism
3. negative geotropism (ageotropism)
4. positive geotropism

✅ Correct Answer: 3

Factors that modify geotropic responses are

1. root and shoot apices, humidity and temperature
2. root and shoot apices, phytochrome, humidity and temperature
3. root and shoot apices, temperature, light and atmospheric carbon dioxide
4. none of these

✅ Correct Answer: 1

In Drosera, movement of tentacles are

1. Thermonastic
2. Photomastic
3. Seismonastic
4. Thigmonastic

✅ Correct Answer: 4

Nastic movements differ from tropic movements in being

1. Nondirectional
2. Movements of variation
3. Stimulated by chemicals
4. Directional

✅ Correct Answer: 1

Movements of leaves of sensitive plant, Mimosa pudica are due to

1. seismonasty
2. chemonasty
3. thermonasty
4. hydrotropism

✅ Correct Answer: 1

Absorptive heterotrophic nutrition is exhibited by

1. fungi
2. algae
3. pteridophytes
4. bryophytes

✅ Correct Answer: 1

The mode of nutrition in which one organism obtains nutrition from other organisms is known as

1. symbiosis
2. autotrophic nutrition
3. saprophytic nutrition
4. heterotrophic nutrition

✅ Correct Answer: 4

Heterotrophic nutrition is

1. oxidation of glucose
2. breakdown of glucose into energy
3. utilization of energy obtained by plants
4. all the above

✅ Correct Answer: 4

The parasitic fungus which destroys wheat plant is

1. lice
2. leech
3. cuscuta
4. Puccinia

✅ Correct Answer: 4

Assertion: mode of nutrition in higher animals is heterotrophic. Reason: Animals can use different trophic levels for heterotrophic nutrition

1. if the assertion is true but reason is false
2. if both assertion and reason are true and reason is correct explanation of assertion
3. if both assertion and reason are false
4. if both assertion and reason are true but reason is not correct explanation of assertion

✅ Correct Answer: 4

The mutualistic association between certain fungi and roots of vascular plants are known as

1. haustoria
2. mycelium
3. rhizoids
4. mycorrhizae

✅ Correct Answer: 4

What is the mode of nutrition in bacteria?

1. heterotrophic
2. autotrophic
3. autotrophic and heterotrophic
4. none of the above

✅ Correct Answer: 3

Digestion of food in amoeba occurs in

1. cytoplasm
2. nucleus
3. food vacuole
4. none of the above

✅ Correct Answer: 3

The mode of nutrition in fungi

1. saprotrophic or parasitic
2. only parasitic
3. only saprotrophic
4. none of above

✅ Correct Answer: 1

A stable ecosystem is maintained with the interaction of

1. predators
2. prey
3. animals-human
4. predator-prey

✅ Correct Answer: 4

In Paramoecium, osmoregulation is a function of

1. cytostome
2. contractile vacuole
3. cytopyge
4. trichocysts

✅ Correct Answer: 2

Osmoregulators carry out excretion of salt through

1. gills
2. fins
3. scales
4. bladder

✅ Correct Answer: 1

Without restoration, if excess water passes out from the tissues of kidney, the cells would

1. shrivel and die
2. burst open and die
3. not get affected at all
4. take water from plasma

✅ Correct Answer: 3

This is used as an osmolyte in humans to increase medullary interstitial osmolality during concentration of urine

1. Urea
2. TMAO
3. (a) and (b) both
4. Uric acid

✅ Correct Answer: 1

A person on a long hunger strike, surviving only on water will have

1. less amino acids in his urine
2. more sodium in hir urine
3. less urea in his urine
4. more glucose in his blood

✅ Correct Answer: 3

Mechanism of regulation, typically between entities and its environment of solutes and the loss and gain of water is known as

1. Homeostasis
2. Thermoregulation
3. Hemostasis
4. Osmoregulation

✅ Correct Answer: 4

Most of the marine invertebrates are

1. Osmoregulators
2. Osmoconformers
3. both depend on sea water concentration
4. None of the above

✅ Correct Answer: 2

Kidney matrix retains some quantity of urea to maintain

1. metabolism
2. micturition
3. desired osmolarity
4. balance of the body

✅ Correct Answer: 3

This is not a primary function of protonephridia

1. excretion
2. osmoregulation
3. fluid volume regulation
4. ionic volume regulation

✅ Correct Answer: 1

This is both osmoregulator and a nitrogenous product

1. Uric acid
2. Urea
3. NH3
4. All of the above

✅ Correct Answer: 2

The bright colours of ripe fruits is due to

1. Chromoplasts
2. Chloroplasts
3. Amyloplasts
4. Leucoplasts

✅ Correct Answer: 1

Factory for synthesis of sugars in autotrophic eukaryotes

1. Mitochondria
2. Chloroplast
3. Ribosome
4. Endoplasmic reticulum

✅ Correct Answer: 2

Stroma is the ground material of which of these

1. Ribosomes
2. Lysosomes
3. Mitochondria
4. Chloroplasts

✅ Correct Answer: 4

When green tomatoes fruits turn to red, then

1. new chromoplasts are formed
2. chloroplasts are disintegrated and get converted into chromoplasts
3. chromoplasts are changed to chloroplasts
4. none of these

✅ Correct Answer: 2

The thylakoid in chloroplasts are arranged as

1. Stacked discs
2. interconnected disc
3. interconnected sacs
4. none of the above

✅ Correct Answer: 1

If we separate the cell organelles of a living cell, then which part should be alive

1. Ribosome
2. cell wall
3. endoplasmic reticulum
4. chloroplast

✅ Correct Answer: 4

Extranuclear DNA is found in

1. Ribosome
2. Chloroplast
3. Golgi apparatus
4. endoplasmic reticulum

✅ Correct Answer: 2

In chloroplasts, where do light reactions occur

1. outer membrane
2. inner membrane
3. thylakoid membrane
4. stroma

✅ Correct Answer: 3

In chloroplasts, the parallel layering of membranes is suited for

1. maximum exposure of enzymes
2. maximum light absorption
3. minimum light absorption so cells can maintain their temperature
4. all of these

✅ Correct Answer: 2

Chlorophyll in chloroplasts is present in

1. Stroma
2. outer membrane
3. thylakoids
4. inner membrane

✅ Correct Answer: 3

Bioaugmentation involves

1. eliminating sludge
2. plants usage for bioremediation
3. addition of microbes to a cleanup site
4. bioventing

✅ Correct Answer: 3

This cleanup approach includes removal of groundwater or soil from its natural setting to permit for bioremediation

1. Bioaugmentation
2. in situ bioremediation
3. ex situ bioremediation
4. Phytoremediation

✅ Correct Answer: 3

At this stage of wastewater treatment, methanogenic microbes are the most significant

1. Sludge digestion
2. Primary treatment
3. Secondary treatment
4. Biological oxidation

✅ Correct Answer: 1

This bioremediation technique includes mixing contaminated water and soil, fertilizers and carbon dioxide in a bioreactor to stimulate biodegradation

1. Composting
2. Slurry-phase bioremediation
3. In situ hybridization
4. Biopile treatment

✅ Correct Answer: 2

Bioremediation

1. usage of microbes to create new organisms
2. usage of anaerobic bacteria to create new antibiotics
3. usage of microbes to destroy environmental pollutants
4. usage of aerobic bacteria to create new vaccines

✅ Correct Answer: 3