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.
1
2
3
4
Correct Answer :
C. 3
In the given figure the marked label 1, 2, 3 and 4 are oesophagus, crop, gizzard and malpighian tubules. Gizzard is a short muscular organ which is used for grinding food.
Related Questions
Epithelial tissue is distinguished from connective tissue, muscular, or nervous tissue by its
large extracellular matrix.
contractibility.
ability to carry action potentials.
basement membrane.
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?
Liver cells
Neurons
Malpighian layer of the skin
Osteocytes
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
Which of the following statement(s) is/are correct regarding respiratory system of cockroach ?
- It consists of a network of trachea, that open through 12 pairs of small holes called spiracles present on the lateral side of the body.
- Thin branching tubes carry oxygen from the air to all the parts.
- The opening of the spiracles is regulated by sphincters.
- Exchange of gases take place at the tracheoles by diffusion.
Only (i)
(i), (ii) and (iii)
(ii), (iii) and (iv)
All of these
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
B
C
Both A nad B
A student was given a specimen to identify on the basis of the characteristics given below.
- They are metamerically segmented.
- Presence of closed circulatory system.
- They have circular and longitudinal muscles for locomotion.
Identify the specimen.
Frog
Pheretima
Cockroach
Rabbit
Statement 1 : Intercalated discs are important regions of cardiac muscle cells.
Statement 2 : Intercalated discs function as boosters for muscle contraction waves.
Statement-1 and statement-2 are true and statement-2 is a correct explanation for statement-1.
Statement-1 and statement-2 are true and ttatement-2 is not a correct explanation for statement-1
Statement-1 is true, and statement-2 is False
Both the statements are false.
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.
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.
Statement- 1 and statement-2 are true and statement-2 is a correct explanation for statement -1
Statement -1 and statement-2 are true and statement-2 is not a correct explanation for statement -1
Statement - 1 is true and statement- 2 is false
Both the statements are false.
Which of the following statement(s) is/are correct about nervous system of cockroach ?
- It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
- There are six ganglia lie in the thorax, and three in the abdomen.
- The sense organs are antennae, eyes, maxillary pulps, labial pulps and anal cerci etc.
- Each eye consists of about 5000 hexagonal ommatidia.
Both (i) and (iii)
Only (ii)
Both (i) and (iv)
All of these
Which of the following vertebrate tissues would be an excellent source of collagen?
Liver
Nerve
Muscle
Tendon
The major functions of loose connective tissue include
occupying spaces between organs and supporting epithelia.
supporting and surrounding blood vessels and nerves
cushioning organs, storing lipids and facilitating diffusion.
All of the above
Non-ciliated simple columnar epithelium often contains _______, which increase the surface area for secretion and absorption.
flagella
collagen fibres
microvilli
all of these
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.
A student was given a sample of tissue. He observes and concludes the following characters.
- The cells are composed of a single layer of tall and slender cells.
- Their nuclei are located at the base.
- Free surface may have microvilli.
- It is found in the lining of stomach and intestine
- They help in secretion and absorption.
Based on the above features identify the epithelium.
Cuboidal epithelium
Columnar Epithelium
Squamous epithelium
Glandular epithelium
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
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
Find the incorrectly matched pair.
Unicellular glandular cells - Goblet cell
Saliva - Exocrine secretion
Fusiform fibres - Smooth muscle
Cartilage - Areolar tissue
Smooth muscles are______.
voluntary, branched, uninucleate
voluntary, multinucleate, cylindrical
involuntary, cylindrical, multinucleate
involuntary, spindle shaped, uninucleated, tapering
Figure given below shows reproductive system of female cockroach. The correct labellings indicated by alphabets (A, B & C) are respectively
A-Spermatheca, B-Collaterial glands, C-Gonapophyses
A-Phallic gland, B-Collaterial glands, C-Gonapophyses
A-Spermatheca, B-Seminal vesicle, C-Gonapophyses
A-Spermatheca, B-Collateral glands, C-Tegmina
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
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.
Skeletal muscle
Smooth muscle
Cardiac muscle
All of these
Which of the following type of tissue is being described by the given statements ?
- They are named because of their special function of linking and supporting other tissues/organs of the body.
- They include cartilage, bone, adipose and blood.
- They provide strength, elasticity and flexibility to the tissue.
- They also secrete modified polysaccharides, which accumulate between cells and fibres and act as matrix.
Epithelial tissue
Connective tissue
Muscle tissue
Neural tissue
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.
The mouth parts of cockroach are
cutting and biting type.
piercing and sucking type.
sucking and rasping type.
sucking and siphoning type.
Which statement regarding anal cerci and anal style in cockroach is correct?
Anal cerci are absent but anal styles are present in male.
Anal cerci are absent and anal styles are present in female.
Anal styles are absent and anal cerci are present in male.
Anal styles are absent and anal cerci are present in female.
The shape of a persons ear is due to mainly to
dense regular connective tissue
dense irregular connective tissue
elastic cartilage
fibrocartilage
Gizzard (proventriculus) in cockroach lies between
oesophagus and stomach
crop and mesenteron
mesenteron and ileum
oesophagus and crop
If the head of cockroach is cut off, it will still alive for as long as one week. It is because of
the body which is covered with a hard chitinous exoskeleton.
head which holds a bit of nervous system.
head which is of no use.
food capturing appratus which is found elsewhere.
In cockroach, the testes are present in
3, 4, 5 abdominal segments
4, 5, 6 abdominal segments
5, 6, 7 abdominal segments
6, 7, 8 abdominal segments