NEET Test Series-2021/NEET Biology MCQS Mock Test Paper 15 Sample Test,Sample questions

Question:
A 30-year old female presents with fatigue, fever, swelling in the neck area along with pain and difficulty in swallowing. Upon diagnosing, tenderness on palpation of thyroid in elicited. The lab reports showed elevated ESR, elevated T4, T3, and thyroglobulin levels. The 24hrs RAIU report is lesser than 5 per cent. What is diagnosed according to the patient’s lab reports?

1.Grave’s disease

2.Subacute thyroiditis

3.Hashimoto’s thyroiditis

4.Acute infectious thyroiditis

Posted Date:-2021-02-22 01:47:19


Question:
A 35-years-old female present to the hospital with symptoms of sudden onset of pain in the anterior neck spreading to the jaw from the past 2 days. Other than these symptoms, she also reported a full recovery from ‘a cold a week ago’. Which of the following findings are not consistent with her diagnosis.

1.Formation of microabscesses

2.Dense fibrosis of the thyroid gland

3.Neutrophilic filtration of thyroid

4.Plasma cells aggregating around damaged thyroid follicles

Posted Date:-2021-02-22 01:47:19


Question:
A chromosome is the thickest during

1.anaphase

2.prophase

3.interphase

4.metaphase

Posted Date:-2021-02-22 01:47:19


Question:
A condition marked by low TSH levels is called ___________.

1.Hypothyroidism

2.Goitre

3.Hyperthyroidism

4. Thyroid cancer

Posted Date:-2021-02-22 01:47:19


Question:
Apomixis is a form of

1.Vernalization

2.Parthenogenesis

3.Parthenocarpy

4.None of the above

Posted Date:-2021-02-22 01:47:19


Question:
 The reason why haemophilia is more commonly observed in human males than in females is due to

1. the disease is due to Y-linked recessive mutation

2.the disease is due to X-linked recessive mutation

3.as a huge population of girls die in infancy

4.the disease is due to X-linked dominant mutation

Posted Date:-2021-02-22 01:47:19


Question:
 Which of the following is the major causative for Grave’s disease?

1.Hyperactivity of thyroid gland

2.Hyperactivity of adrenal cortex

3.Hyperactivity of adrenal medulla

4.Hyperactivity of the islets of Langerhans

Posted Date:-2021-02-22 01:47:19


Question:
Difference between heartwood and sapwood is that heartwood

1. shows the presence of fibres and rays

2.has dead and non-conducting elements

3. lacks parenchyma and vessels

4. is susceptible to pathogens and pests

Posted Date:-2021-02-22 01:47:19


Question:
DNA fingerprinting recognizes the differences in

1. satellite DNA

2. bulk DNA

3.Repetitive DNA

4.both (a) and (c)

Posted Date:-2021-02-22 01:47:19


Question:
Each of the chromosome at the anaphase stage of a bone marrow cell in our body has

1.one chromatid

2.two chromatids

3.several chromatids

4.no chromatids

Posted Date:-2021-02-22 01:47:19


Question:
Euchromatin

1.stains lightly

2. is partially condensed

3.genetically active chromatin with genes

4. all of the above

Posted Date:-2021-02-22 01:47:19


Question:
Exophthalmic goitre is due to ________.

1.Hyposecretion of thyrocalcitonin

2.Hyposecretion of thyroxine

3.Hypersecretion of thyroxine

4.Hypersecretion of thyrocalcitonin

Posted Date:-2021-02-22 01:47:19


Question:
Geitonogamy and autogamy both are prevented in which one of these?

1.Cucumber

2. Maize

3.Castor

4.Papaya

Posted Date:-2021-02-22 01:47:19


Question:
Haemophilia is

1.X – linked

2. Y – linked

3. Z – linked

4.Autosomal

Posted Date:-2021-02-22 01:47:19


Question:
Haemophilia is as a result of a lack of

1.STH

2.ADH

3. AHF

4. ACTH

Posted Date:-2021-02-22 01:47:19


Question:
Haemophilia is caused by

1.Bacteria

2.Virus

3. Genetic mutation

4.Cause unknown

Posted Date:-2021-02-22 01:47:19


Question:
If Bb is a gene pair of an individual then the alleles for this gene pair are

1.A and B

2.a and A

3. a and b

4.b and B

Posted Date:-2021-02-22 01:47:19


Question:
In adventive embryony, a type of apomixis, the embryo develops directly from the

1.Zygote

2.accessory embryo sacs in the ovule

3. antipodals or synergids in an embryo sac

4. integuments or nucleus

Posted Date:-2021-02-22 01:47:19


Question:
In many laboratories, active research is on to comprehend the genetics of apomixis

1. Apomixis generates genetically different individuals

2. Apomixis is the method to produce seeds without fertilization

3.Hybrid plants are directly formed by apomixis

4.Transfer of apomictic genes into hybrid varieties that shall prevent hybrid vigour loss over the years

Posted Date:-2021-02-22 01:47:19


Question:
In monocots, grafting is not possible as _________

1.They show parallel venation

2. they have scattered vascular bundles

3.they lack cambium

4. they are herbaceous

Posted Date:-2021-02-22 01:47:19


Question:
In patients with haemophilia, which of these can increase the risk of cerebral microbleeds?

1.cardiovascular risk factors

2.increased age

3.Hepatitis C infection

4.all of these

Posted Date:-2021-02-22 01:47:19


Question:
In plants, apomixis pertains to plant development

1.from root cuttings

2.from cuttings of stem

3. without the gametes having to fuse

4.fusion of gametes

Posted Date:-2021-02-22 01:47:19


Question:
In which typical stage are Lampbrush chromosomes observed?

1.meiotic prophase

2.mitotic metaphase

3.mitotic prophase

4.mitotic anaphase

Posted Date:-2021-02-22 01:47:19


Question:
A chromosome with a very short arm and a very long arm is referred to as

1.Metacentric

2.telocentric

3.Acrocentric

4.Sub-metacentric

Posted Date:-2021-02-22 01:47:19


Question:
Megasporium is equivalent to

1.ovule

2.embryo sac

3.fruit

4. Nucleus

Posted Date:-2021-02-22 01:47:19


Question:
One of these statements about apomixis is incorrect

1.formation of seeds without fertilization

2.Meiotic division and fertilization of gametes takes place to form a zygote

3.Seeds are genetically similar

4.None of these

Posted Date:-2021-02-22 01:47:19


Question:
Rapid heart rate, weight loss, heat sensitivity are most likely the symptoms of _________

1.Thyroid cancer

2.Hyperthyroidism (overactive thyroid)

3. Hypothyroidism (underactive thyroid)

4. All of the above

Posted Date:-2021-02-22 01:47:19


Question:
Rapid heartbeat, shortness of breath, high body temperature are the symptoms of ___________.

1.Thyroid crisis

2.Thyroid storm

3.Thyroid failure

4.Thyroid death

Posted Date:-2021-02-22 01:47:19


Question:
Rarely females experience the physiological defect of haemophilia as they do so only when they are

1.carrier for the defect

2. wives of haemophilic husbands

3. homozygous for the defect

4.heterozygous for the defect

Posted Date:-2021-02-22 01:47:19


Question:
The diagrammatic representation of karyotype (morphological representation of chromosomes) of a species is known as

1.Cladogram

2.Ecogram

3.Chromogram

4.Idiogram

Posted Date:-2021-02-22 01:47:19


Question:
The difference between perisperm and endosperm is that perisperm:

1.has reserve food

2.forms by fusion of the secondary nucleus with several sperms

3.is a diploid tissue

4.is a haploid tissue

Posted Date:-2021-02-22 01:47:19


Question:
The point at which polytene chromosomes appear to be attached together is known as

1.centriole

2. centromere

3. chromomere

4.chromocenter

Posted Date:-2021-02-22 01:47:19


Question:
The reason why hybrid seeds have to be produced every year is

1. hybrid seed industry tends to increase the cost of seeds

2.hybrid plants turn sterile in coming years

3.show more heterosis in coming years

4. hybrid vigour is not maintained in more than one generation as segregation of genes is initiated in the second generation

Posted Date:-2021-02-22 01:47:19


Question:
This about apomixis is true:

1.There is no fertilization involved in both apomixis and parthenocarpy

2.Apomixis produces genetically identical mother cells

3.Apomixis is observed in angiosperms and gymnosperms

4.All of the above

Posted Date:-2021-02-22 01:47:19


Question:
This disease falls under the same category as colourblindness in man

1.Presbyopia

2.Night blindness

3. Diabetes insipidus

4.Haemophilia

Posted Date:-2021-02-22 01:47:19


Question:
This force can stabilize a DNA double-helix 

1.Hydrophilic sugar-phosphate groups are found on the exterior of the helix where interaction with water occurs

2.Hydrophobic bases are present in the interior of the helix, each base-pair is stabilized by the same number of hydrogen bonds

3.covalent base stacking interactions may take place between neighbouring bases within the same strand in the helix

4.non-covalent N-glycosidic bonds may form between nitrogenous bases in opposite strands in the helix

Posted Date:-2021-02-22 01:47:19


Question:
This is a complication of haemophilia

1.Bleeding in the head

2. joint swelling

3.death

4.all of these

Posted Date:-2021-02-22 01:47:19


Question:
This is ineffective against antibiotics

1.bacterial infected gonorrhoea

2.bacterial infected wound

3. haemophilia

4.bacterial infected throat

Posted Date:-2021-02-22 01:47:19


Question:
This is one of the most recent and valid explanations for stomatal movements.

1.Starch hydrolysis

2. Transpiration

3.Guard cell photosynthesis

4.Potassium efflux and the influx

Posted Date:-2021-02-22 01:47:19


Question:
This lacks in patients with haemophilia A

1.X chromosome

2.Calcium

3.Antihemophilic factor

4.Plasma thromboplastin

Posted Date:-2021-02-22 01:47:19


Question:
Thyroid disorders are often mistaken for this condition.

1.Pregnancy

2.Menopause

3.Crohn’s disease

4.Posttraumatic stress disease

Posted Date:-2021-02-22 01:47:19


Question:
Vascular bundles are closed in monocots as:

1.presence of vascular cambium between xylem and phloem

2. presence of xylem and phloem

3. absence of vascular cambium

4.xylem and phloem occur in separate bundles

Posted Date:-2021-02-22 01:47:19


Question:
Which of the following are the primary water-conducting elements of xylem in gymnosperms?

1.Fibres

2.Vessels

3.Tracheids

4.Transfusion tissue

Posted Date:-2021-02-22 01:47:19


Question:
Which of the following body function is regulated by the thyroid producing hormones?

1.Digestion

2.Temperature

3. Metabolism

4.Blood pressure

Posted Date:-2021-02-22 01:47:19


Question:
Which of the following events takes place in a ring girdled plant?

1.The eath of the root first

2.The death of the shoot first

3. The shoots and the root dies first

4.Neither the shoot nor the root will die

Posted Date:-2021-02-22 01:47:19


Question:
Which of the following factors promotes the opening of the stomatal aperture?

1. A decrease in guard cell turgidity

2.When the outer walls of the guard cells contracts

3.Radial orientation of the cellulose microfibrils in the cell wall of the guard cells

4.The longitudinal orientation of the cellulose microfibrils in the cell wall of guard cells

Posted Date:-2021-02-22 01:47:19


Question:
Which of the following is made of dead cells?

1. Phloem

2.Phellem

3.Collenchyma

4.Xylem parenchyma

Posted Date:-2021-02-22 01:47:19


Question:
Which of the following is not a lateral meristem?

1.Phellogen

2. Cork cambium

3. Intercalary meristem

4.Interfascicular cambium

Posted Date:-2021-02-22 01:47:19


Question:
Which of the following statement are true about the Tyloses – the balloon-shaped structures?

1.Characterise the sapwood

2.Original in the lumen of vessels

3.Are linked to the ascent sap through xylem vessels

4.Are extensions of the xylem parenchyma cells into vessels

Posted Date:-2021-02-22 01:47:19


Question:
Which type of epithelium is found in thyroid follicles?

1.Columnar

2.Squamous

3.Cuboidal

4.Transitional

Posted Date:-2021-02-22 01:47:19


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