Which of the following statement is incorrect regarding cuboidal epithelium ?
It is an epithelial tissue.
It is composed of a single layer of cube-like cells.
They are found in the walls of blood vessels and air sacs of lungs.
Secretion and absorption are the main functions of these tissue.
Correct Answer :
C. They are found in the walls of blood vessels and air sacs of lungs.
They are commonly found in ducts of glands and tubular parts of nephrons in kidneys.
Related Questions
The only type of cell seen in a tendon is
muscle fibres
reticular cells
collagenous cells
fibroblasts
Nervous tissue cells that play several supporting roles but do not transmit impulses are called
glial cells
dendrites
nerve cells
neurons
Non-ciliated simple columnar epithelium often contains _______, which increase the surface area for secretion and absorption.
flagella
collagen fibres
microvilli
all of these
What are the three basic components of connective tissues?
Ground substance, cells and basement membrane
Cartilage, intercellular matrix and serum
Cells, protein fibers and ground substance
Collagen, elastin and reticular fibers
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 one of the following pairs of structures distinguishes a nerve cell from other types of cell ?
Vacuoles and Fibres
Flagellum and Medullary sheath
Nucleus and Mitochondria
Cell body and Dendrites
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
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
Which of the following type of cell junction is not found in animal tissues ?
Adhering junction
Tight junction
Gap junction
Plasmodesmata
Muscle tissue cells are contractile, which means they
are responsible for the production and secretion of enzymes.
are specialized in contraction and relaxation.
help in the movement of involuntary organs only.
all of the above
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 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
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.
Only (i)
Both (ii) and (iii)
Both (i) and (iv)
All of these
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.
Gizzard (proventriculus) in cockroach lies between
oesophagus and stomach
crop and mesenteron
mesenteron and ileum
oesophagus and crop
General function of gland is to
protect the body.
control the function of epithelial tissues.
produce and secrete specialized compounds to control and maintain different body functions.
help to maintain blood pressure and nerve actions.
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
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.
Statement 1 and 2 are true and statement 2 is the correct explanation of statement 1.
Statement 1 and 2 are true and statement 2 is not the correct explanation of statement 1.
Both statements 1 and 2 are false.
Statement 1 is true and statement 2 is false.
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.
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.
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
The secretions of endocrine glands are released directly
into the skin surface
into the blood stream
into a gland duct
into the brain tissue
Intercalated discs are the communication junctions between the cells of
cardiac muscles
striped muscles
adipose tissue
nerve and striated muscles
The kind of epithelium which forms the inner walls of blood vessels is
cuboidal epithelium
columnar epithelium
ciliated columnar epithelium
squamous epithelium
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
Mast cells are associated with
exocrine glands
endocrine glands
areolar connective tissue
neural tissue
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
Smooth muscles are______.
voluntary, branched, uninucleate
voluntary, multinucleate, cylindrical
involuntary, cylindrical, multinucleate
involuntary, spindle shaped, uninucleated, tapering
Hair present in the skin are
epidermal in origin and made of dead cells.
epidermal in origin and made of living cells.
dermal in origin and made of living cells.
dermal in origin and made of dead cells.
Which of the following statements regarding frog is not correct?
Fertilization is external and takes place in water.
External ear and tympanum can be seen externally.
In females the ureters and oviduct open separately in the cloaca.
Copulatory pad on the first digit of the fore limbs and vocal sac are present in male frog.