Related Questions
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Intercalated discs are the communication junctions between the cells of
D. nerve and striated muscles
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4
The figure given below shows the head region of cockroach. Identify A to F.
A. A- Compound eye, B-Ocellus, C-Maxilla, D-Mandible, E-Labrum, F-Labium
B. A- Ocellus, B-Compound eye, C-Mandible, D-Maxilla, E-Labrum, F-Labium
C. A- Ocellus, B-Compound eye, C-Mandible, D-Maxilla, E-Labium, F-Labrum
D. A- Ocellus, B-Compound eye, C-Maxilla, D-Mandible, E-Labrum, F-Labium
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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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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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Which of the following type of muscle tissue is being described on the basis of given statements ?
- These muscle fibres taper at both ends and do not show striations.
- The wall of internal organs such as the blood vessels, stomach and intestine contain this type of muscle tissue.
- They are involuntary as their function cannot be directly controlled.
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The chondrocytes of connective tissue are
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Compound squamous epithelium is found in
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The intercellular material of the given figure is solid and resists compression. Identify the figure and the label marked as A & B.
A. Fig - Cartilage, A - Collagen, B - Collagen
B. Fig - Cartilage, A - Microtubule, B - Collagen fibres
C. Fig - Bone, A - Chondrocyte, B - Chondroclast
D. Fig - Bone, A - Chondroclast, B - Osteoblast
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Tendons and ligaments are the examples of
A. areolar connective tissue
C. dense regular connective tissue
D. loose connective tissue
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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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Male cockroach can be identified from the female by the presence of
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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.
D. Mandibles become harder.
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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
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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4
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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Statement 1 : Intercalated discs are important regions of cardiac muscle cells.
Statement 2 : Intercalated discs function as boosters for muscle contraction waves.
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 ttatement-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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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.
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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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Which of the follwing statement(s) is/are correct ?
- Cockroaches are brown or black bodied animals that are included in class insecta of phylum arthropoda.
- Males bear a pair of short, thread like anal styles which are absent in females.
- Heart of cockroach consists of elongated muscular tube lying along mid dorsal line of thorax and abdomen.
- The nymph grows by moulting about 13 times to reach the adult form.
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The only type of cell seen in a tendon is
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The frog never drinks water but absorbs it through one of its respiratory organ. Identify the organ.
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In which one of the following preparations, cell junctions come across most frequently ?
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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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Which of the following is involved in the production of new blood cells ?
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Read the following statements.
- It is a contractile tissue present only in the heart.
- Cell junctions fuse the plasma membranes of these cells and make them stick together.
- Communication juntions at some fusion points allow the cells to contract as a unit, i.e., when one cell receives a signal to contract, its neighbours are also stimulated to contract.
Which of the following type of tissue is being described by the above statements ?
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Which of the following statement is incorrect regarding cuboidal epithelium ?
A. It is an epithelial tissue.
B. It is composed of a single layer of cube-like cells.
C. They are found in the walls of blood vessels and air sacs of lungs.
D. Secretion and absorption are the main functions of these tissue.
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Which of the following statement is/are correct regarding digestive system of cockroach ?
- Mouth opens into a short tubular pharynx, leading to a narrow tubular passage called oesophagus.
- Gizzard helps in grinding the food particles.
- A ring of 6-8 blind tubules called hepatic or gastric caecae is present at the junction of foregut and midgut, which secrete digestive juice.
- At the junction of midgut and hindgut is present another ring of 100-150 yellow coloured thin filamentous malphigian tubules which help in removal of excretory products from haemolymph.
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Identify the figure with its correct function Fig :. Adipose connective tissue
A. Areolar connective tissue Serves as a support framework for epithelium.
B. Adipose tissue Store fats and act as heat insulators.
C. Dense regular tissue Provide flexibility.
D. Dense irregular tissue Provide strength and elasticity.
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The secretions of endocrine glands are released directly
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Which of the following statements regarding frog is not correct?
A. Fertilization is external and takes place in water.
B. External ear and tympanum can be seen externally.
C. In females the ureters and oviduct open separately in the cloaca.
D. Copulatory pad on the first digit of the fore limbs and vocal sac are present in male frog.