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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

Correct Answer :

D. Plasmodesmata


Plasmodesmata are narrow channels that act as intercellular cytoplasmic bridges to facilitate communication and transport of materials between plant cells. While adhering, tight and gap junctions are specialized junctions that provide both structural and functional links between the individual cells of animal tissues.

Related Questions

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In which one of the following preparations, cell junctions come across most frequently ?

A. Ligament

B. Tendon

C. Cartilage

D. Ciliated epithelium

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Tendons and ligaments are the examples of

A. areolar connective tissue

B. adipose tissue

C. dense regular connective tissue

D. loose connective tissue

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Nervous tissue cells that play several supporting roles but do not transmit impulses are called

A. glial cells

B. dendrites

C. nerve cells

D. neurons

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The blood of cockroach contains no respiratory pigment. It means that

A. cockroach does not respire.

B. respiration is anaerobic.

C. oxygen goes directly into tissues by diffusion.

D. oxygen goes directly into tissues by intracellular capillary system.

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The shape of a persons ear is due to mainly to

A. dense regular connective tissue

B. dense irregular connective tissue

C. elastic cartilage

D. fibrocartilage

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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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Intercalated discs are the communication junctions between the cells of

A. cardiac muscles

B. striped muscles

C. adipose tissue

D. nerve and striated muscles

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The following figure shows the extarnal features of cockroach with few structures labelled as A, B, C, D, & E. Identify A to E .

A. A- Mesothorax, B-Pronotum, C-Metathorax, D-Tegmina, E-Anal style

B. A- Pronotum, B-Metathorax, C-Mesothorax, D-Tegmina, E-Sterna

C. A- Pronotum, B-Mesothorax, C-Metathorax, D-Tegmina, E-Anal cerci

D. A- Pronotum, B-Mesothorax, C-Metathorax, D-Tegmina, E-Anal style

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Figure given below shows reproductive system of female cockroach. The correct labellings indicated by alphabets (A, B & C) are respectively

A. A-Spermatheca, B-Collaterial glands, C-Gonapophyses

B. A-Phallic gland, B-Collaterial glands, C-Gonapophyses

C. A-Spermatheca, B-Seminal vesicle, C-Gonapophyses

D. A-Spermatheca, B-Collateral glands, C-Tegmina

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Statement 1 : Cartilage (protein matrix) and bone (calcium matrix) are rigid connective tissue.
Statement 2 : Blood is connective tissue in which plasma is the matrix.

A. Statement- 1 and statement-2 are true and statement-2 is a correct explanation for statement -1

B. Statement -1 and statement-2 are true and statement-2 is not a correct explanation for statement -1

C. Statement - 1 is true and statement- 2 is false

D. Both the statements are false.

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The given figure shows the digestive system of cockroach with few structures marked as A, B, C and D. Identify structures A to D.

A. A-Gizzard, B-Crop, C-Hepatic caecae, D-Malpighian tubules

B. A-Crop, B-Gizzard, C-Hepatic caecae, D-Malpighian tubules

C. A- Crop, B-Gizzard, C-Malpighian tubules, D-Hepatic caecae

D. A- Gizzard, B-Crop, C-Malpighian tubules, D-Hepatic caecae

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Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following.
Which of the cells are least likely to be replaced by new cells?

A. Liver cells

B. Neurons

C. Malpighian layer of the skin

D. Osteocytes

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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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The supportive skeletal structures in the human external ears and in the nose tip are examples of

A. ligament

B. areolar tissue

C. bone

D. cartilage

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What external changes are visible after the last moult of a cockroach nymph?

A. Development of anal cerci.

B. Development of both forewings and hind wings.

C. Development labium.

D. Mandibles become harder.

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Which of the following type of tissue is being described by the given statements ?
  1. They are named because of their special function of linking and supporting other tissues/organs of the body.
  2. They include cartilage, bone, adipose and blood.
  3. They provide strength, elasticity and flexibility to the tissue.
  4. They also secrete modified polysaccharides, which accumulate between cells and fibres and act as matrix.

A. Epithelial tissue

B. Connective tissue

C. Muscle tissue

D. Neural tissue

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Which statement regarding anal cerci and anal style in cockroach is correct?

A. Anal cerci are absent but anal styles are present in male.

B. Anal cerci are absent and anal styles are present in female.

C. Anal styles are absent and anal cerci are present in male.

D. Anal styles are absent and anal cerci are present in female.

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Cockroaches are brown or black bodied animals that are included in class _______ of phylum _______.

A. reptilia; annelida

B. insecta; arthropoda

C. insecta; annelida

D. reptilia; arthropoda

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4

Which one of the following pairs of structures distinguishes a nerve cell from other types of cell ?

A. Vacuoles and Fibres

B. Flagellum and Medullary sheath

C. Nucleus and Mitochondria

D. Cell body and Dendrites

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Refer the given figure of female reproductive system of cockroach and identify the correct labels (marked as 1, 2, 3 and 4) which are collectively called genital pouch.

A. 1 & 2

B. 1 & 3

C. 2 & 4

D. 3 & 4

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In the given diagram of areolar connective tissue, the different cells and parts have been marked by alphabets (A, B, C & D). Choose the answer in which these alphabets correctly match with the parts and cells they indicate.

A. A-Adipocyte, B-Collagen fibres, C-Microfilament, D-Mast cells

B. A-Macrophage, B-Collagen fibres, C-Microfilament, D-Mast cells

C. A-Macrophage, B-Collagen fibres, C-Microtubule, D-RBC

D. A-Macrophage, B-Fibroblast, C-Collagen fibres, D-Mast cells

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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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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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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

Hair present in the skin are

A. epidermal in origin and made of dead cells.

B. epidermal in origin and made of living cells.

C. dermal in origin and made of living cells.

D. dermal in origin and made of dead cells.

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Which of the following statement(s) is/are correct about nervous system of cockroach ?
  1. It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
  2. There are six ganglia lie in the thorax, and three in the abdomen.
  3. The sense organs are antennae, eyes, maxillary pulps, labial pulps and anal cerci etc.
  4. Each eye consists of about 5000 hexagonal ommatidia.

A. Both (i) and (iii)

B. Only (ii)

C. Both (i) and (iv)

D. All of these

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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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Statement 1: Typhlosole increases the effective area of absorption in the intestine.
Statement 2: Typhlosole, present in the intestine, is the characteristic feature of cockroach.

A. Statement 1 and 2 are true and statement 2 is the correct explanation of statement 1.

B. Statement 1 and 2 are true and statement 2 is not the correct explanation of statement 1.

C. Both statements 1 and 2 are false.

D. Statement 1 is true and statement 2 is false.

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The figure given below shows the alimentary canal of cockroach with few structures labelled as 1, 2, 3 and 4. Identify the correct identification of the structure which is also called proventriculus and helps in grinding the food particles.

A. 1

B. 2

C. 3

D. 4

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Phallic organs in cockroach are related to

A. male excretory system.

B. male reproductive system.

C. female excretory system.

D. female reproductive system.