NEET SECTION - A [ZOOLOGY - MCQ]

Select the plant cells/tissue
Guard cell, Subsidiary cells, Leydig cells, Parenchyma, Leukocytes, Bulliform cells, Phloem, Podocytes, Mesophyll, Thrombocytes, Sertoli cells

On the basis of the mode of pouring of their secretions, glands are divided into two categories these categories are

Ear wax secreting cells have which type of epithelium?

Given below are two statements:One is labelled a Assertion (A) and the other is labelled as Reason (R) .
Assertion (A): With the help of several ommatidia, a cockroach can perceive several images of an object, i.e.,mosaic vision
Reason (R): Mosaic vision gives NO sensitivity but more resolution
In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following types of epithelium lines the walls of blood vessels ?

What would be the proportions of light and hybrid density DNA molecule, respectively if Meselson and Stahl's experiment was continued for 60 minutes :

With respect to nucleosome, Which of the following statements is incorrect :

If a DNA molecule is shortened by 25 base pairs,how many helical turns will be reduced from its structure :

A low frequency recombination indicates that the genes are: :

Which one of the following is not an Assisted Reproductive Technology (ART) used by childless couples to have children?

In human three layers give rise to all tissues/organs in adults, these three layers are
(a) Ectoderm
(b) Endoderm
(c) Mesoderm
(d) Middle layer

Which of the following hormones are secreted in women only during pregnancy :
(a) Relaxin
(b) Oxytocin
(c) hCG
(d) hPL
(e) Progesterone
Choose the most appropriate answer from the options given below :

How many Y-chromosomes are present in the 2nd polar body in human beings :

Arrange the following male sex accessory ducts in the correct sequence for the transport of sperms from the tests
(a) Epididymis
(b) Ejaculatory duct
(c) Vasa efferentia
(d) Rete testis
(e) Vas deferens
Choose the most appropriate answer from the options given below:

Endemism refers to:

Given below are two statements:
Statement - I: Pyramid of energy is always upright and is the most efficient
Statement-II: Pyramid of biomass in sea is generally inverted.
In the light of the above statements, choose the most appropriate answer from the options given below:

A population with finite resources shows a logistic growth curve where the correct sequence of events will be :

Give below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In human beings, insulin is synthesized as a pro-hormone which needs to be processed before it becomes fully mature and functional.
Reason (R) : The extra stretch of C-peptide is to be removed from A-peptide and B-peptide chain of insulin.
In the light of the above statements, Choose the most appropriate answer from the option given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : The nematode can not survive in a transgenic host which expresses specific interfering RNA.
Reason (R) : Nematode specific gene introduced in the host produces both sense and antisense complementary RNA which initiate RNA interference in the host cell.
In the light of the above statement, choose the most appropriate answer form the option given below:

In a cell, the separation of DNA strands is brought about by the enzyme DNA helicase, whereas in PCR, the separation of DNA strands is due to :

Identify the properties of a good vector used in rDNA technology
(a) It should have origin of replication supporting a high copy number
(b) It should have preferably more than '2' recognition sites
(c) The restriction sites in vector should be in the antibiotic- resistant genes
(d) It should have suitable marker genes
(e) It should be easy to isolate and purify
Choose the most appropriate answer from the options given below:

Select the incorrect match

Immuno-suppressants are administered to burn patients or during organ transplantation to suppress:

Give below are two statements :
Statement - I : When an infected female Anopheles mosquito bite, it release gametocytes of plasmodium into the healthy person.
Statement - II : The female Anopheles mosquito takes up sporozoites of Plasmodium with blood meal from an infected person, suffering form malaria.
In the light of the above statements, Choose the most appropriate answer from the options give below :

Genetic Drift occurs due to :

Select the correct match regarding adaptive radiation of Australian marsupials corresponding to placental mammals

Match List - I with List - II

List - I	List - II
(a) Chromoplasts	(i) Proteins
(b) Amyloplasts	(ii) Oil and fats
(c) Elaioplasts	(iii) Starch
(d) Aleuroplasts	(iv) Carotene

Choose the correct answer from the option given below

Given below are two statements :
Statement - I : Membrane-bound organelles of the endomembrane system coordinate cellular functions.
Statement - II : Mitochondria and chloroplasts are not considered a part of the endomembrane system.
In the light of the above statements, choose the mostappropriate answer from the options given below :

Select the correct match

A. Panthera	I. Tiger
B. Canis	II. Dog
C. Felis	III. Cat
D. Solanum	IV. Makoi

Given below are two statements:
Statements-I: Amphibians and mostly reptiles have a 3-chambered heart with two atria and a single ventricle, and oviparous in nature
Statements-II: Crocodiles possess a 4 chambered heart with two ventricles and two atria: and viviparous in nature
In the light of the above statements, choose the most appropriate answer from the options given below:

Air bladder is found in :

Which one of the following features are not true for chordates :
(a) Heart is dorsal.
(b) Pharynx is perforated by gill slits.
(c) Central nervous system is ventral solid and single.
(d) post-anal tail is present.
(e) Notochord is present.
Choose the most appropriate answer from the option give below :

An intestinal hormone that stimulates the pancreas to release a watery secretion that is rich in bicarbonate ions:

Normal sleep-wake cycle in a human body is maintained by the secretion of:

Which of the following is correct statement :

Which one of the following hormones reduces the blood pressure :

Terrestrial adaptations necessitated the production of :

Inadequate supply of oxygen to heart muscles leads to a symptom of acute chest pain. This disorder of the circulatory system is identified as:

In the regulation of respiration, a chemosensitive area adjacent to the rhythm centre in the medulla region of the brain, is highly sensitive to :

Select the correct sequence of events occurring during Prophase-I of Meiosis-I
(a) Nuclear envelope breakdown
(b) Synaptonemal complex formation
(c) Compaction of chromosomes
(d) Terminalisation of chiasmata
(e) Crossing over
Choose the most appropriate answer from the options given below:

In a reaction catalyzed by an enzyme, which of the following statements is correct :