NEET MCQs Structural Organisation in Animals

Lymphoid tissue is found in
a) Thymus b) Tonsils c) Lymph nodes d) All of these
Earthworm lives in the burrows made by boring and swallowing the soil to
a) Uptake food b) Get moisture c) Procreation d) Avoid opponents
Which of the following cells are round and biconcave in shape?
a) White blood cells b) Red blood cells
c) Columnar epithelial cells d) Nerve cells
Given below the diagram of internal organs of frog and identify 𝐴 to 𝐹 a) A-Gall bladder, B-Lungs, C-Testis, D-Kidney, E-Urethra, F-Urinary bladder
b) A-Gall bladder, B-Lungs, C-Fat bodies, D-Kidney, E-Rectum, F-Urinary bladder
c) A-Gall bladder, B-Lungs, C-Ovary, D-Kidney, E-lleum, F-Urinary bladder
d) A-Gall bladder, B-Lungs, C-Fat bodies, D-Kidney, E-Colon, F-Urinary bladder
The clitellum divides the body of earthworm into …… regions
a) 3 b) 2 c) 4 d) 5
Identify 𝐴,𝐵 and 𝐶 in the given diagram of adipose tissue a) A-Cytoplasm, B-Nucleus, C-Cell wall
b) A-Fat storage area, B-Mast cell, C-Plasma membrane
c) A-Cell fluid, B-Collagen fibres, C-Plasmalemma
d) A-Fat storage area, B-Nucleus, C-Plasma membrane
How many litres of blood is present in normal human body?
a) 6.8 L b) 6.0 L c) 5.9 L d) 7.2 L
Lining of body cavities, ducts and tube are made up of
a) Compound epithelium b) Simple epithelium
c) Cuboidal epithelium d) Keratinised epithelium
Which of the following metalloprotein is found in the blood of earthworm?
a) Haemoglobin b) Hemerytherin c) Hemocyanin d) Myoglobin
Histamine, serotonin and heparin are secreted by
a) Lymphocytes b) Monocytes c) Neutrophils d) Basophils
Find out the wrongly matched pair.

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a) Squamous epithelium – Skin of frog
b) Columnar epithelium – Peritoneum of body cavity
c) Ciliated epithelium – Bronchioles
d) Stratified squamous epithelium – Oesophagus

The body wall of the earthworm is covered by which of the following layers (externally-internally)?
a) Epidermis, cuticle, coelomic epithelium, longitudinal muscle, circular muscles
b) Cuticle, epidermis, circular muscles, coelomic epithelium, longitudinal muscle
c) Non-cellular cuticle, epidermis, circular muscles, longitudinal muscles, coelomic epithelium
d) Coelomic epithelium, epidermis, cuticle, circular muscles, longitudinal muscles
The number of pairs of cranial nerves arising from the brain of frog is
a) 10 b) 9 c) 8 d) 7
The ova of the earthworms are fertilised by the sperm within the
a) Cocoon b) Seminal vesicles c) Soil d) None of the above
Which of the following tissues provides a covering layer for some of the body parts?
a) Connective tissues b) Muscular tissues
c) Epithelial tissues d) Neural tissues
Consider the following statements about the connective tissue
I. Their special function is linking and supporting the other organs tissue of the body
II. It is the most abundant type of animal tissue
III. Blood is a specialised connective tissue which contains collagen
IV. The cells of connective tissue secretes mucous
Which of the statement given above are incorrect?
a) I and II b) II and III c) III and IV d) I, II, III and IV
Which of the following type of connective tissue is present at the tip of human nose?
a) Cartilage b) Bone c) Adipose tissue d) None of these
The tissue which forms the glands in humans is
a) Muscular tissue b) Nervous tissue c) Epithelium tissue d) Connective tissue
How many species of 𝑃ℎ𝑒𝑟𝑒𝑡𝑖𝑚𝑎 are found all over the world?
a) 200 b) 300 c) 400 d) 500
In which of the following segments of earthworm, septal nephridia is present?
a) 15-last b) 8-15 c) 18-last d) 15-17
Which of the following part of the alimentary canal of cockroaches is used for storing food?
a) Crop b) Gastric caecae c) Gizzard d) Oesophagus
In earthworm, pharyngeal nephridia are present as three paired tufts in the segments
a) 3rd, 4th and 5th b) 4th, 5th and 6th c) 5th, 6th and 7th d) 6th, 7th and 8th
….. type of junction is found in the epithelium and other tissues. Fill up the blank by using a suitable word
a) Two b) Three c) One d) Four
Which of the following is a sense organ pair in cockroach?
a) Antennae and eyes
b) Maxillary palp and labial palps
c) Antennae and anal cerci
d) All of the above
Which one is an iron storage protein?
a) Myosin b) Glutelin c) Ferritin d) Immunoglobulin
WBCS accumulate at site of wound by
a) Hypertension b) Arteriosclerosis c) Haemopoiesis d) Diapedesis
Cells of areolar tissues that produces or secrete fibres are called
a) Fibroblast b) Mast cells c) Macrophage d) Adipocytes
Hypopharynx of the cockroach acts as
a) Mouth b) Lips c) Tongue d) Jaws

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The frogs have the ability to change its colour to hide them from their enemies. This protective colouration
is called
a) Hibernation b) Aestivation c) Mimicry d) Camuflage
Agranulocytes are
a) Lymphocytes and monocytes b) Eosinophils and basophils
c) Lymphocytes and eosinophils d) Basophils and monocytes
Which of the following is not a function of epithelium?
a) Protection b) Connection
c) Secretion or excretion d) Adsorption
In cockroaches, stink gland is found in
a) 4th and 5th terga
b) 5th and 6th terga
c) 5th and 6th sterna
d) 4th and 5th sterna
Animal tissues are categorised into four basic types on the basis of
a) Function and origin b) Structure and functions
c) Functions only d) Origin and structures
The number of vasa efferentia that arises from testes in frog’s male reproductive system is
a) 9 – 12 b) 10 – 12 c) 13 – 16 d) 16 – 19
The multilobed nucleus and granular WBCs are
a) Eosinophils b) Neutrophils c) Lymphocytes d) Monocytes
Which of the following is not correctly matched?
a) Cartilage – Limbs and hands in adults b) Blood – Fluid connective tissue
c) Tendons – Connects bone to bone d) Adipose tissue – Blubber of whales
Red cell count is carried out by
a) Haemocytometer b) Haemoglobinometer
c) Sphygmomanometer d) Electrocardiogram
Which of the following are the examples of saccular glands?
a) Oil and milk glands of humans b) Sweat gland in mammals
c) Brunner’s gland in humans d) None of the above
Tendons helps in connecting
a) Muscles to bones b) Bone to bone c) Bone of cartilage d) Cartilage to muscle
The leucocytes contain, which of the following in large quantity?
a) Basophils b) Neutrophils c) Eosinophils d) Monocytes
A complete set of the mouth part of cockroach consists of
a) Labrum and labium
b) Labium, labrum and tongue
c) Larum, mandibles, maxillae and labium
d) Labrum, maxillae and labium
In which of the following muscle fibres intercalated disc occurs?
a) In non-striped muscles
b) Between cardiac muscle fibres
c) At the junction of muscle and nerve cells
d) In striped muscles
Which of the following part of cockroach’s alimentary canal secretes digestive juices?
a) Malphigian tubule b) Proventriculus c) Caecae d) Crop
Consider the following statements related to 𝑅𝑎𝑛𝑎 𝑡𝑖𝑔𝑟𝑖𝑛𝑎 and select the correct option stating which are
true and which are false
I. Hindlimbs are larger and muscular than forelimbs
II. The alimentary canal of frog is short

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III. They respire on the land through skin only
IV. They contains two-chambered heart
I II III IV
a) T F T F b) F F T T c) F T T F d) T T F F

During inflammation, which of the following is secreted by connective tissue?
a) Heparin b) Histamine c) Serotonin d) Glucagon
Given below the functions of different parts of the alimentary canal of cockroach. Correlate these functions
with their respective organs
I. Grinding of food particles
II. Secretion of digestive juices
III. Clearing of haemolymph
The correct set of organs is
a) I. Malpighian tubule
II. Proventericulus
III. Hepatic caecae
b) I. Proventriculus
II. Gastric caecae
III. Malpighian tubule
c) I. Gastric caecae
II. Gizzard
III. Malpighian tubule
d) I. Gizzard
II. Crop
III. Malpighian tubule
The compound eyes of cockroaches consists of about
a) 200 hexagonal ommatidia b) 2000 hexagonal ommatidia
c) 20 hexagonal ommatidia d) 20,000 hexagonal ommatidia
In frog, for the digestion of food, wall of the stomach secretes
a) Pepsins and renin b) Amylase and tryptophanase
c) HCl and gastric juices d) HCl and pepsin
The major constituent of connective tissue is
a) Vitamin b) Carbohydrate c) Lipid d) Collagen
The body of earthworm is divided into
a) 100-120 metamers b) 150-200 metamers
c) 250-300 metamers d) 300-350 metamers
Which of the following gland is present in man but not in frog?
a) Thyroid gland b) Salivary gland c) Pancreas d) Liver
Endothelium of blood vessels is made up of
a) Simple cuboidal epithelium b) Simple squamous epithelium
c) Simple columnar epithelium d) Simple non-ciliated columnar epithelium
Ciliated epithelium is present in
a) Trachea b) Ureter c) intestine d) Nasal chamber
In water, the skin of the frog performs the function of
a) Osmosis b) Plasmolysis c) Diffusion d) Thermoregulation
Which type of tissue is present in human heart?
a) Epithelial tissue b) Muscular tissue and neural tissue
c) Connective tissue d) All of the above
Given below the diagram of the ventral view of earthworm’s body. Identify A to F and choose the correct
combination of options

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a) A-Setae, B-Female genital aperture, C-Male genital aperture, D-Genital papillae, E-Clitellum, F-Anus
b) A- Anus, B- Setae, C-Male genital aperture, D- Female genital aperture, E-Genital papillae, F- Clitellum
c) A-Setae, B- Male genital aperture, C- Female genital aperture, D-Genital papillae, E-Clitellum, F-Anus
d) A-Nephridiopores, B- Setae, C-Nuclei, D-Metamers, E-Prostomium, F-Anus

Identify 𝐴,𝐵 and 𝐶 in given figures and choose the correct combination of options a) A-Unicellular gland, B-Multicellular gland, C-Multilayered cells
b) A-Multicellular gland, B-Unicellular gland, C-Squamous epithelium
c) A-Goblet gland, B-Multicellular gland, C-Columnar epithelium
d) A-Flattened cell, B-Multilayered cells, C-Transitional epithelium
Consider the following statement about frog’s digestive system
I. Food is captured by the bilobed tongue
II. Partially digested food is called chyme. It is passed from the stomach to the first part of intestine
III. Bile digests carbohydrates and proteins
IV. Inner wall of the intestine contains cilia
Which of the above given statement are incorrect?
a) I and II b) II and III c) III and IV d) I and IV
The cell junctions called tight, adhering and gap junctions are found in
a) Muscular tissue b) Connective tissue c) Epithelial tissue d) Neural tissue
The principal role of setae in earthworm is
a) Respiration b) Excretion c) Locomotion d) Assimilation
In addition to the Malpighian tubules, excretion of the waste products in cockroach occurs by
a) Fat bodies b) Nephrocytes c) Urecose glands d) All of these
Which of the following organ is not present on earthworm?
a) Peristomium b) Copulatory papillae
c) Tail d) Setae
Setae helps in the locomotion of earthworm but is not present uniformaly in all the segments of the
earthworm segments. Select among the following that represent setae
a) 1st segment
b) Last segment
c) Clitellar segment
d) All except those metioned in options (a), (b) and (c)
Earthworm reacts to the chemical stimuli due to the presence of
a) Mechanical receptor b) Photoreceptor c) Eyes d) Chemoreceptors
Find out the pair in reference to the earthworm, which is not correctly matched
a) Clitellum – Secretes cocoon

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b) Blood plasma – Contains haemoglobin
c) Setae – Defence against predators
d) Typhosole – Absorption

Which of the following structures is 𝑃ℎ𝑒𝑟𝑒𝑡𝑖𝑚𝑎 is correctly matched with its function
a) Clitellum – Secretes cocoon b) Gizzard – Absorbs digested food
c) Setae – Defence against predators d) Typhosole – Storage of extra nutrients
Fertilisation and development in earthworms occurs with in the
a) Spermthecae b) Cocoon c) Prostate gland d) Seminal vesicles
Cardiac muscles are
a) Striated and voluntary b) Striated and involuntary
c) Smooth and voluntary d) Smooth and involuntary
Keratinized dead layer of skin is made up of
a) Stratified squamous epithelium b) Simple cuboidal epithelium
c) Simple columnar epithelium d) Stratified columnar epithelium
Rh factor is present in
a) All vertebrates b) All mammals
c) All reptiles d) Man and rhesus monkey only
Which of the following statement is/are incorrect in refer one to earthworms?
I. They are soft and naked and hence, cannot survive in the dry earth
II. They respire through the nasal openings
III. They decaying organic matter of the soil forms their chief food
IV. Rain makes the earth soft for burrowing
a) I and IV b) II and III c) II and IV d) II and III
Consider the following statements about respiratory system of frog
I. Skin acts as a respiratory organ in water as well as on land
II. Dissolved oxygen is exchanged through the skin by the process of diffusion in water
III. Lungs are paired and present in thorax
IV. Gaseous exchange takes place through the skin during hibernation and aestivation
Which of the statements given above is are incorrect?
a) Only I b) I and II c) I, II and III d) II and IV
Which of the following connective tissue does not contain collagen?
a) Cartilage b) Bone c) Blood d) Adipose
In male frog, ureters act as
a) Urinogenital ducts b) Cloaca c) Urinary bladder d) Lymphatic system
The development of 𝑃𝑒𝑟𝑖𝑝𝑙𝑎𝑛𝑎𝑡𝑎 𝑎𝑚𝑒𝑟𝑖𝑐𝑎𝑛𝑎 is
a) Holometabolous b) Paurometabolous
c) Ametabolous d) Hemimetabolous
Consider the following statements in accordance to the excretory system of the earthworm
I. Nepridia is segmentally arranged coiled tubule
II. Nephridia regulates the volume and composition of the body fluids
III. There are three type of nephridia found in the earthworm
IV. Pharyngeal nephridia is present as three paired tufts in the 4th, 5th and 6th segment
Which of the above statement is/are correct?
a) Only I b) I and IV c) I, II and III d) I, II, III and IV
Septal nehphridia of earthworm opens into the
a) Stomach b) Lining of body wall
c) Intestine d) Coelomic chamber
The type of tissue lining present on the ducts of salivary gland and pancreas is
a) Columnar epithelium b) Cuboidal epithelium
c) Compound epithelium d) Glandular epithelium

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