Category: NEET Biology Objective Questions

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Down Syndrome Multiple Choice Questions

MCQs on Down Syndrome :

1. One of this trait is not seen in a person with Down syndrome
(a) High muscle tone
(b) Small stature
(c) Upward slant eye
(d) Short neck

2. The number of chromosomes a child with Down syndrome has is
(a) 45
(b) 46
(c) 47
(d) 48

3. Down syndrome is caused due to
(a) bacterial infection
(b) a chromosomal abnormality
(c) Viral infection
(d) lack of oxygen supply to the brain during birth

4. Which of these traits is not linked with Down syndrome?
(a) Oily skin
(b) Hypotonicity
(c) Simian Crease
(d) Brachycephaly

5. This assessment finding would enable a nurse to suspect the presence of Down syndrome in a newborn
(a) Single palmar crease and hypotonia
(b) Short palpebral tissues and flat maxillary area
(c) Prominent scalp veins and a high-pitched cry
(d) Persistent postnatal growth lag and Microcephaly

6. Down syndrome is

(b) Chromosomal
(c) dominant
(d) recessive

7. A disease which may result from Down syndrome
(a) Cancer
(b) Cellulitis
(c) Celiac disease
(d) None of these

8. Generally, a person with Down syndrome has an IQ of
(a) 20-30
(b) 40-50
(c) 60-70
(d) None of the above

9. The chances of an offspring to have Down syndrome __________ with the mother’s age
(a) Decreases
(b) Increases
(c) is not influenced
(d) there is no correlation

10. There are several variations of Down syndrome with Trisomy 21 accounting for close to 95% of all cases recorded. There is another form of the syndrome that occurs when a segment of the 21st chromosome detaches to attach itself to another chromosome. Its name is
(a) Displacement
(b) Transportation
(c) Translocation
(d) Relocation

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Bryophyta Multiple Choice Questions

MCQs on Bryophyta :

1. Which among the following is also known as bog moss?
(a) Riccia
(b) Sphagnum
(c) Marchantia
(d) Funaria

2. The thalloid plant body is found in
(a) Marchantia
(b) Sphagnum
(c) Funaria
(d) Salvinia

3. In some of the liverworts, spore dispersal is aided by
(a) elaters
(b) peristome teeth
(c) indusium
(d) calyptra

4. Peat moss is used for transporting plants to distant places because
(a) it is hygroscopic
(b) it reduces transpiration
(c) it is easily available
(d) it serves as a disinfectant

5. Find the true statement about bryophytes
(a) they have chloroplasts
(b) they have archegonia
(c) they are thalloid
(d) all of the above

6. In mosses, meiosis takes place during
(a) gamete formation
(b) antheridia and archegonia formation
(c) spore germination
(d) spore formation

7. A characteristic feature of bryophytes is
(a) a dominant and parasitic sporophyte
(b) a dominant and spore-producing gametophyte
(c) a small sporophyte phase, which is dependent on the gametophyte
(d) sporophytes stay for a longer duration

8. The antherozoids of Funaria are
(a) monociliated
(b) biciliated
(c) multiciliated
(d) aciliated

9. All the plants like fern and mosses, which produce spores are grouped under
(a) bryophytes
(b) cryptogams
(c) thallophytes
(d) sporophytes

10. Independent male and female gametophytes are present in
(a) Pinus
(b) mustard
(c) castor
(d) Sphagnum

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Self Evaluation Test – Human Health and Disease Multiple Choice Questions

MCQs on Self Evaluation Test – Human Health and Disease :

1. RBC count is low in anaemia and
(a) Myxoedema
(b) Influenza
(c) Typhoid
(d) Leukemia

2. A child is suffering from Kwashiorkor and if this child is compared with other marasmus children then what additional symptoms are present in Kwashiorkor child?
(a) wasted muscles
(b) decrease in body weight
(c) impaired physical growth
(d) oedema

3. Chronic anaemia and multiple sclerosis are
(a) hereditary diseases
(b) allergic diseases
(c) autoimmune diseases
(d) hormonal diseases

4. Which one of the following statements is correct about T-lymphocytes in mammals?
(a) these are originated in lymphoid tissues
(b) these are produced in thyroid
(c) they scavenge damaged cells and cellular debris
(d) there are three main types – cytotoxic T-cells, helper T-cells and suppressor T-cells

5. The antibody dependent cytotoxicity is seen in
(a) Non-compatible-blood transfusion
(b) generalise anaphylaxis
(c) local anaphylaxis
(d) immune complex reaction

6. Mast cells secrete a protein which causes the dilation of blood vessels. The protein is
(a) Histamine
(b) Pyrogens
(c) Interferon
(d) None of these

7. Parkinson’s disease is caused due to deficiency of
(a) Dopamine
(b) GABA
(c) Acetylcholine
(d) Endorphins

8. Gaucher’s disease is linked with
(a) malnutrition
(b) abnormal fat metabolism
(c) abnormal protein metabolism
(d) abnormal carbohydrate metabolism

9. LSD is obtained from
(a) Papaver somniferum
(b) Claviceps purpurea
(c) Cannabis sativa
(d) Erythroxylon coca

10. Infectious proteins are present in
(a) Prions
(b) Gemini viruses
(c) satellite viruses
(d) viroids

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Hardy Weinberg Law Multiple Choice Questions

MCQs on Hardy Weinberg Law :

1. In the Caucasian population of the US, 1 in 2500 babies is affected by a recessive condition – cystic fibrosis. In this population, the frequency of the dominant allele is
(a) 0.02
(b) 0.36
(c) 0.56
(d) 0.98

2. A sampled “a” population has 36% of homozygous recessive genotype (aa). Then the frequency of allele “a” is
(a) 0%
(b) 20%
(c) 60%
(d) 70%

3. 360 out of 1000 individuals in a population have a genotype of AA while 480 have Aa genotype. The rest 160 belong to aa. Frequency of allele A in this population is
(a) 0.7
(b) 0.6
(c) 0.5
(d) 0.4

4. A gene locus has two alleles A and a. If the frequency of dominant allele A is 0.4, then the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population is
(a) 0.16(AA); 0.48(Aa); 0.36(aa)
(b) 0.16(AA); 0.24(Aa); 0.36(aa)
(c) 0.16(AA); 0.36(Aa); 0.48(aa)
(d) 0.36(AA); 0.48(Aa); 0.16(aa)

5. What does p² in the below mentioned Hardy-Weinberg equation indicate?
(p+q)² = p² + 2pq + q²

(a) individuals that are heterozygous dominant
(b) individuals having a lethal allele
(c) individuals that are homozygous dominant
(d) individuals that are homozygous recessive

6. 25 individuals in a population are homozygous dominant, then the individuals that are expected to be homozygous recessive are
(a) 100
(b) 75
(c) 50
(d) 25

7. Consider a population of sheep to be in Hardy-Weinberg equilibrium. The allele for black wool(w) has an allele frequency of 0.81 while the allele for white wool(W) has an allele frequency of 0.19. Then the percentage of heterozygous individuals in the population is
(a) 4%
(b) 15%
(c) 31%
(d) 66%

8. This condition is essential for a population to be in the Hardy-weinberg equillirbirum
(a) random mating
(b) no mutations
(c) large population
(d) all of these

9. This statement describes the Hardy-Weinberg law the best
(a) it is impossible to predict expected allele frequencies mathematically
(b) in large populations, dominant alleles become more prevalent
(c) allele frequency changes over a period of time in a large population
(d) mechanism of inheritance in a large population does not change allele frequency

10. This is true of the population which are included in Hardy-Weinberg equilibrium
(a) entities migrate constantly
(b) populations should be limited and small
(c) mating is random
(d) process of natural selection is occurring

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Coelom Multiple Choice Questions

MCQs on Coelom :

1. Find the correct match
(a) Molluscs – acoelomate
(b) Platyhelminthes – coelomate
(c) Aschelminthes – pseudocoelomate
(d) Insects – pseudocoelomate

2. The fluid that comes out of earthworm while piercing it (without damaging its gut) is
(a) slimy mucous
(b) excretory fluid
(c) hemolymph
(d) coelomic fluid

3. Which of the following is not true about Annelida?
(a) Ventral nerve cord
(b) Closed circulatory system
(c) Segmentation
(d) Pseudocoelom

4. How platyhelminthes differ from annelids?
(a) bilateral symmetry
(b) pseudocoel
(c) body cavity is absent
(d) none of the above

5. Where does true coelom present in the body?
(a) between mesoderm and endoderm (body wall)
(b) between body wall and ectoderm
(c) mesoderm and ectoderm
(d) ectoderm and endoderm

6. The body cavity found in echinoderms and chordates is
(a) haemocoel
(b) enterocoelom
(c) pseudocoelom
(d) schizocoelom

7. Which of the following develops into pseudocoelom?
(a) Archenteron
(b) Blastocoel
(c) Embryonic mesoderm
(d) Blastopore lip

8. Which of the following has haemocoel?
(a) Earthworm
(b) Hydra
(c) Cockroach
(d) Nereis

9. Common characteristics of coelenterates and sponges are
(a) triploblastic and pseudocoelomate
(b) triploblastic and acoelomate
(c) diploblastic and acoelomate
(d) monoblastic and acoelomate

10. The characteristic feature of Ascaris is
(a) pseudocoelom and no metamerism
(b) true coelom and no metamerism
(c) pseudocoelom and metamerism
(d) true coelom and metamerism