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4

The frog never drinks water but absorbs it through one of its respiratory organ. Identify the organ.

A. Skin

B. Lung

C. Buccal cavity

D. None of the above.

Correct Answer :

A. Skin


The frog never drinks water but absorbs it through the skin. The skin is always maintained in a moist condition.

Related Questions

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4

Match the types of connective tissue given in column-I with their examples given column-II and choose the correct option.
Column-IColumn-II
(Types of connective)(Examples)
A. Loose connectiveI. Tendons and ligaments tissue
B. Dense regularII. Skin tissue
C. Dense irregularIII. Cartilage, bones, blood tissue
D. SpecializedIV. Fibroblasts, macrophages connective tissue and mast cells

A. A I; B IV; C II; D III

B. A I; B IV; C III; D II

C. A IV; B I; C II; D III

D. A IV; B II; C I; D III

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4

The given figure shows the nephridial system of earthworm and answer the question.

Select the option which shows the correct identification and the function of the structure marked as X.

A. Lateral heart. It is a blood pumping organ.

B. Calciferous glands. They neutralize the humic acid present in humus.

C. Nephridia. It regulates the volume and composition of the body fluids.

D. Blood glands. They produce blood cells and haemoglobin which is dissolved in blood plasma.

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4

Match the epithetial tissue given in column-I with its location given in column-II and choose the correct option.
Column IColumn II
(Epithelial tissue)(Location)
A. CuboidalI. Epidermis of skin
B. CiliatedII. Inner lining of blood vessels
C. ColumnarIII. Inner surface of gall bladder
D. SquamousIV. Inner lining of fallopian tube
E. KeratinizedV. Lining of pancreatic duct squamous

A. A V; B IV; C II; D III; E I

B. A III; B IV; C V; D II; E I

C. A V; B IV; C III; D II; E I

D. A III; B IV; C V; D I; E II

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4

The given figure shows open circulatory system of cockroach with structure marked as A, B and C. Which structure is a 13 pair of wing shaped involuntary muscles and mantain blood circulation?

A. A

B. B

C. C

D. Both A nad B

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4

Which of the following type of cell junction is not found in animal tissues ?

A. Adhering junction

B. Tight junction

C. Gap junction

D. Plasmodesmata

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4

The diagram given below represents the reproductive organ of male cockroach. Choose the correct labelling of the part of marked as A, B, C and D.

A. A 8th sternum, B - Anal cercus, C - 10th tergum, D - Anal style

B. A - 10th tergum, B - Anal cercus, C - Anal style, D - 8th sternum

C. A - Anal style, B - Anal cercus, C - 10th tergum, D- 8th sternum

D. A - Anal cercus, B - 8th sternum, C - 10th tergum, D - Anal style.

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4

What will happen if ligaments are cut or broken?

A. No movements at joints.

B. Bones will become fixed.

C. Bones will become unfixed.

D. Bone will move freely at joints.

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4

Which of the following statement(s) is/are correct regarding cockroaches ?
  1. The body of the cockroach is segmented and divisible into three distinct regions head, thorax and abdomen.
  2. Blood vascular system is of closed type.
  3. They are monoecious and both sexes have well developed reproductive organs.
  4. The development of P. americana is paurometabolus, meaning there is development through nymphal stage.

A. Both (i) and (ii)

B. Both (ii) and (iii)

C. Both (i) and (iv)

D. All of these

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4

The chondrocytes of connective tissue are

A. fibre secreting cells

B. bone forming cells

C. cartilage cells

D. bone eating cells

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4

Gizzard (proventriculus) in cockroach lies between

A. oesophagus and stomach

B. crop and mesenteron

C. mesenteron and ileum

D. oesophagus and crop

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4

Muscle tissue cells are contractile, which means they

A. are responsible for the production and secretion of enzymes.

B. are specialized in contraction and relaxation.

C. help in the movement of involuntary organs only.

D. all of the above

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4

A student was given a specimen to identify on the basis of the characteristics given below.
  1. They are metamerically segmented.
  2. Presence of closed circulatory system.
  3. They have circular and longitudinal muscles for locomotion.

Identify the specimen.

A. Frog

B. Pheretima

C. Cockroach

D. Rabbit

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4

Choose the correct sequence of alimentary canal of Cockroach

A. Gizzard -> Crop ->?Malphigian tubules ->?Hepatic caeca ->?Rectum.

B. Gizzard -> Hepatic caeca -> Crop -> Rectum -> Malphigian tubules.

C. Crop -> Gizzard ->?Hepatic caeca ->?Malphigian tubules ->?Rectum.

D. Crop -> Hepatic caeca ->?Gizzard -> Rectum -> Malphigian tubules.

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4

Select the correct statement regarding Periplaneta americana

A. There are 16 very long malpighian tubules present at the junctions of midgut and hindgut.

B. Grinding of food is carried out only by the mouth parts.

C. Nervous system is located ventrally and consists of segmentally arranged ganglia joined by a pair of longitudinal connectives.

D. Females bear a pair of short thread like anal styles.

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4

Neuroglia are

A. excitable cells of neural tissue.

B. supporting and non-excitable cells of neural tissue.

C. two to three times in volume of neural tissue.

D. protective and excitable cells of neural tissue.

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4

The following figures A, B and C are types of muscle tissue. Identify A, B and C.

A. A Smooth muscle, B Cardiac muscle, C Skeletal muscle

B. A Skeletal muscle, B Smooth muscle, C Cardiac muscle

C. A Cardiac muscle, B Smooth muscle, C Skeletal muscle

D. A Smooth muscle, B Skeletal muscle , C Cardiac muscle

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4

Mast cells are associated with

A. exocrine glands

B. endocrine glands

C. areolar connective tissue

D. neural tissue

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4

The ciliated columnar epithelial cells in humans occur in

A. Eustachian tube and stomach lining

B. bronchioles and fallopian tubes

C. bile duct and oesophagus

D. fallopian tubes and urethra

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4

Male cockroach can be identified from the female by the presence of

A. long antennae

B. wingless body

C. elongated abdomen

D. anal styles

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4

What are the three basic components of connective tissues?

A. Ground substance, cells and basement membrane

B. Cartilage, intercellular matrix and serum

C. Cells, protein fibers and ground substance

D. Collagen, elastin and reticular fibers

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4

Which of the following is involved in the production of new blood cells ?

A. Adipose cell

B. Bone marrow

C. Liver

D. Matrix

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4

Consider the following statements regarding cockroach and mark the correct option.
  1. Head is formed by the fusion of 6-segments.
  2. Mouth parts are biting and chewing type.
  3. Crop is the part of mid gut.

A. Only (ii) is correct

B. (ii) and (iii) are correct

C. (i) and (ii) are correct

D. Only (iii) is correct

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4

Compound squamous epithelium is found in

A. stomach

B. intestine

C. trachea

D. pharynx

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4

Cartilage tissues are likely to be slow in healing following an injury because

A. cartilage cells cannot reproduce.

B. they lack direct blood supplies.

C. the intercellular material is missing.

D. cartilage cells are surrounded by fluids.

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4

Which of the following statement(s) is/are correct regarding compound epithelium ?

A. It is made of more than one layer of cells and thus has a limited role in secretion and absorption.

B. Their main function is to provide protection against chemical and mechanical stresses.

C. They cover the dry surface of the skin, moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and pancreatic ducts.

D. All of the above

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4

The kind of epithelium which forms the inner walls of blood vessels is

A. cuboidal epithelium

B. columnar epithelium

C. ciliated columnar epithelium

D. squamous epithelium

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4

Match column-I (type of epithelium) with column-II (Description) and choose the correct option.
Column-IColumn-II
(Types of epithelium)(Description)
A. SquamousI. It is composed of a epithelium single-layer of cube-like cells
B. CuboidalII. Having cilia on their free epithelium surface
C. ColumnarIII. It is composed of a single epithelium layer of tall and slender cells
D. CiliatedIV. It is made up of a single thin epithelium layer of flattened cells with irregular boundaries

A. A IV; B I; C III; D II

B. A I; B IV; C III; D II

C. A IV; B I; C II; D III

D. A IV; B III; C I; D II

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4

Which of the following statement(s) regarding cell junctions is/are correct ?

A. Tight junctions help to stop substances from leaking across a tissue.

B. Adhering junctions perform cementing to keep neighbouring cells together.

C. Gap junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions, small molecules and sometimes big molecules.

D. All of the above

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4

Which of the following statement(s) is/are correct regarding excretory system of cockroach ?
  1. Excretion is performed by malphigian tubules.
  2. They absorb nitrogenous waste products and convert them into uric acid which is excreted out through hindgut. Hence, this insect called ammonetelic.
  3. In addition, fat body, nephrocytes and uricose glands also help in excretion.

A. Only (i)

B. Both (ii) and (iii)

C. Both (i) and (iii)

D. All of these

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4

The fibres of which of the following muscles are fusiform and do not show striations

A. Skeletal muscles

B. Cardiac muscles

C. Both (a) and (b)

D. Smooth muscles