Which of the following statements is not correct regarding neural tissue ?
It exerts the greatest control over the bodys responsiveness to changing conditions.
Chondrocytes, the unit of neural system are excitable cells.
Neuroglial cells protect and support neurons.
When a neuron is suitably stimulated, an electrical disturbance is generated.
Correct Answer :
B. Chondrocytes, the unit of neural system are excitable cells.
Neurons, the unit of neural system are excitable cells while chondrocytes are cartilagenous cells.
Related Questions
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 8th sternum, B - Anal cercus, C - 10th tergum, D - Anal style
A - 10th tergum, B - Anal cercus, C - Anal style, D - 8th sternum
A - Anal style, B - Anal cercus, C - 10th tergum, D- 8th sternum
A - Anal cercus, B - 8th sternum, C - 10th tergum, D - Anal style.
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-Adipocyte, B-Collagen fibres, C-Microfilament, D-Mast cells
A-Macrophage, B-Collagen fibres, C-Microfilament, D-Mast cells
A-Macrophage, B-Collagen fibres, C-Microtubule, D-RBC
A-Macrophage, B-Fibroblast, C-Collagen fibres, D-Mast cells
Smooth muscles are______.
voluntary, branched, uninucleate
voluntary, multinucleate, cylindrical
involuntary, cylindrical, multinucleate
involuntary, spindle shaped, uninucleated, tapering
Match the description given in column I with their examples given in column II and choose the correct option.
| Column I | Column II |
|---|---|
| (Description) | (Example) |
| 1. Aquatic respiratory | A. Skin organ |
| 2. Organ which acts | B. Ureter urogenital duct and opens into the cloaca |
| 3. A small median chamber | C. Cloaca that is used to pass faecal matter, urine and sperms to the exterior |
| 4. A triangular structure | D. Sinus venosus which joins the right atrium and receives blood through vena cava |
1 - A, 2 - B, 3 - C, 4 - D
1 - C, 2 - A, 3 - D, 4 - B
1 - B, 2 - A, 3 - C, 4 - D
1 - C, 2 - B, 3 - D, 4 - A
Which of the following types of connective tissue is mismatched with its matrix ?
Areolar Loosely packed matrix of protein fibres
Bone Mineralized matrix
Cartilage Highly vascular matrix
Blood Liquid matrix
Find the incorrectly matched pair.
Unicellular glandular cells - Goblet cell
Saliva - Exocrine secretion
Fusiform fibres - Smooth muscle
Cartilage - Areolar tissue
Identify figures-I and II.
Figure I Figure II
Dense regular Dense irregular connective tissue, connective tissue
Loose irregular Loose regular connective tissue, connective tissue
Adipose tissue, Specialized connective tissue
Connective tissue Areolar tissue proper
Match column-I with column-II and choose the correct option.
| Column-I | Column-II |
|---|---|
| A. Periplaneta | I. Hepatic caecae americana |
| B. A ring of 6-8 blind | II. Phylum arthropoda tubules |
| C. Vascular system | III. Spiracles |
| D. 10 pairs of small | IV. Malpighian tubules holes |
| E. Excretion | V. Open type |
A I; B II; C III; D IV; E V
A II; B I; C V; D III; E IV
A II; B I; C III; D V; E IV
A III; B IV; C II; D V; E I
Match the terms given in column-I with their feature given in column-II and choose the correct option.
| Column-I | Column-II |
|---|---|
| (Terms) | (Features) |
| A. Exocrine gland | I. They help to stop substances from leaking across a tissue |
| B. Endocrine gland | II. Hormones are secreted directly into the fluid bathing the gland |
| C. Tight junctions | III. They perform cementing to keep neighbouring cells together. |
| D. Adhering junctions | IV. Secretes mucus, saliva, earwax, oil, milk, digestive enzymes and other cell products |
A IV; B II; C I; D III
A II; B IV; C I; D III
A IV; B II; C III; D I
A IV; B I; C II; D III
The intercellular material of the given figure is solid and resists compression. Identify the figure and the label marked as A & B.
Fig - Cartilage, A - Collagen, B - Collagen
Fig - Cartilage, A - Microtubule, B - Collagen fibres
Fig - Bone, A - Chondrocyte, B - Chondroclast
Fig - Bone, A - Chondroclast, B - Osteoblast
Which of the following statement(s) is/are correct about muscle tissue ?
Each muscle is made of many long, cylindrical fibres arranged in parallel arrays.
Muscle fibres contract (shorten) in response to stimulation, then relax (lengthen) and return to their uncontracted state in a coordinated fashion.
Muscles play an active role in all movements of the body.
All of the above
The shape of a persons ear is due to mainly to
dense regular connective tissue
dense irregular connective tissue
elastic cartilage
fibrocartilage
Consider the following statements regarding cockroach and mark the correct option.
- Head is formed by the fusion of 6-segments.
- Mouth parts are biting and chewing type.
- Crop is the part of mid gut.
Only (ii) is correct
(ii) and (iii) are correct
(i) and (ii) are correct
Only (iii) is correct
Identify the figure with its correct function Fig :. Adipose connective tissue
Areolar connective tissue Serves as a support framework for epithelium.
Adipose tissue Store fats and act as heat insulators.
Dense regular tissue Provide flexibility.
Dense irregular tissue Provide strength and elasticity.
The following figure shows the extarnal features of cockroach with few structures labelled as A, B, C, D, & E. Identify A to E .
A- Mesothorax, B-Pronotum, C-Metathorax, D-Tegmina, E-Anal style
A- Pronotum, B-Metathorax, C-Mesothorax, D-Tegmina, E-Sterna
A- Pronotum, B-Mesothorax, C-Metathorax, D-Tegmina, E-Anal cerci
A- Pronotum, B-Mesothorax, C-Metathorax, D-Tegmina, E-Anal style
The ciliated columnar epithelial cells in humans occur in
Eustachian tube and stomach lining
bronchioles and fallopian tubes
bile duct and oesophagus
fallopian tubes and urethra
Which of the following statement(s) is/are correct regarding compound epithelium ?
It is made of more than one layer of cells and thus has a limited role in secretion and absorption.
Their main function is to provide protection against chemical and mechanical stresses.
They cover the dry surface of the skin, moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and pancreatic ducts.
All of the above
The frog never drinks water but absorbs it through one of its respiratory organ. Identify the organ.
Skin
Lung
Buccal cavity
None of the above.
Which of the following vertebrate tissues would be an excellent source of collagen?
Liver
Nerve
Muscle
Tendon
Read the following statements and answer the question.
- They have a hard and non-pliable ground substance rich in calcium salts and collagen fibres.
- They support and protect softer tissues and organs.
- Osteocytes are present in the spaces called lacunae.
- They also interact with skeletal muscles attached to them to bring about movements.
Which of the following type of tissue is being described by above statements ?
Cartilage
Bone
Blood
Neurons
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-Gizzard, B-Crop, C-Hepatic caecae, D-Malpighian tubules
A-Crop, B-Gizzard, C-Hepatic caecae, D-Malpighian tubules
A- Crop, B-Gizzard, C-Malpighian tubules, D-Hepatic caecae
A- Gizzard, B-Crop, C-Malpighian tubules, D-Hepatic caecae
Choose the correct sequence of alimentary canal of Cockroach
Gizzard -> Crop ->?Malphigian tubules ->?Hepatic caeca ->?Rectum.
Gizzard -> Hepatic caeca -> Crop -> Rectum -> Malphigian tubules.
Crop -> Gizzard ->?Hepatic caeca ->?Malphigian tubules ->?Rectum.
Crop -> Hepatic caeca ->?Gizzard -> Rectum -> Malphigian tubules.
Which of the following type of cell junction is not found in animal tissues ?
Adhering junction
Tight junction
Gap junction
Plasmodesmata
Intercalated discs are the communication junctions between the cells of
cardiac muscles
striped muscles
adipose tissue
nerve and striated muscles
Three essential components of most neurons are
simple epithelium, extracellular matrix and nerves.
axon, dendrites and cell body.
nerve cells, synapse and neuroglia.
mylein sheeth, node of Ranvier and Schwann cells.
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.
Only (i)
Both (ii) and (iii)
Both (i) and (ii)
All of the above
A student was given a sample of two tissues. He observes the tissues under the microscope and draws their figures (1 and 2) as shown below.
Identify the tissues (1 and 2).
1: Columnar cells bearing cilia; 2: Unicellular glandular epithelium
1: Cuboidal cells bearing cilia; 2: Multicellular glandular epithelium
1: Compound cells bearing cilia; 2: Unicellular glandular epithelium
1: Columnar cells bearing cilia; 2: Multicellular glandular epithelium
Which of the following is involved in the production of new blood cells ?
Adipose cell
Bone marrow
Liver
Matrix
Which of the following statement is correct regarding Female reproductive system of earthworm ?
It consists of two large ovaries, lying laterally in the 6th 7th abdominal segments.
Each ovary is formed of a group of five ovarian tubules or ovarioles, containing a chain of developing ova.
A pair of spermatheca is present in the 5th segment which opens into the genital chamber.
None of the above
The figure given below shows the head region of cockroach. Identify A to F.
A- Compound eye, B-Ocellus, C-Maxilla, D-Mandible, E-Labrum, F-Labium
A- Ocellus, B-Compound eye, C-Mandible, D-Maxilla, E-Labrum, F-Labium
A- Ocellus, B-Compound eye, C-Mandible, D-Maxilla, E-Labium, F-Labrum
A- Ocellus, B-Compound eye, C-Maxilla, D-Mandible, E-Labrum, F-Labium