The secretions of endocrine glands are released directly
into the skin surface
into the blood stream
into a gland duct
into the brain tissue
Correct Answer :
B. into the blood stream
On the basis of the mode of pouring of secretion, gland are divided into (a) exocrine, and (b) endocrine glands. Exocrine glands secrete mucus, saliva, oil, digestive enzymes and other cell products. These products are released through ducts or tubes. In contrast, endocrine glands do not have ducts. Their products called hormones are secreted directly into the fluid bathing the gland.
Related Questions
The following figures A, B and C are types of muscle tissue. Identify A, B and C.
A Smooth muscle, B Cardiac muscle, C Skeletal muscle
A Skeletal muscle, B Smooth muscle, C Cardiac muscle
A Cardiac muscle, B Smooth muscle, C Skeletal muscle
A Smooth muscle, B Skeletal muscle , C Cardiac muscle
Match the epithetial tissue given in column-I with its location given in column-II and choose the correct option.
| Column I | Column II |
|---|---|
| (Epithelial tissue) | (Location) |
| A. Cuboidal | I. Epidermis of skin |
| B. Ciliated | II. Inner lining of blood vessels |
| C. Columnar | III. Inner surface of gall bladder |
| D. Squamous | IV. Inner lining of fallopian tube |
| E. Keratinized | V. Lining of pancreatic duct squamous |
A V; B IV; C II; D III; E I
A III; B IV; C V; D II; E I
A V; B IV; C III; D II; E I
A III; B IV; C V; D I; E II
Select the correct statement regarding Periplaneta americana
There are 16 very long malpighian tubules present at the junctions of midgut and hindgut.
Grinding of food is carried out only by the mouth parts.
Nervous system is located ventrally and consists of segmentally arranged ganglia joined by a pair of longitudinal connectives.
Females bear a pair of short thread like anal styles.
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
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
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
Which of the following type of cell junction is not found in animal tissues ?
Adhering junction
Tight junction
Gap junction
Plasmodesmata
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
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
Cartilage tissues are likely to be slow in healing following an injury because
cartilage cells cannot reproduce.
they lack direct blood supplies.
the intercellular material is missing.
cartilage cells are surrounded by fluids.
Find the incorrectly matched pair.
Unicellular glandular cells - Goblet cell
Saliva - Exocrine secretion
Fusiform fibres - Smooth muscle
Cartilage - Areolar tissue
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
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.
Match the types of connective tissue given in column-I with their examples given column-II and choose the correct option.
| Column-I | Column-II |
|---|---|
| (Types of connective) | (Examples) |
| A. Loose connective | I. Tendons and ligaments tissue |
| B. Dense regular | II. Skin tissue |
| C. Dense irregular | III. Cartilage, bones, blood tissue |
| D. Specialized | IV. Fibroblasts, macrophages connective tissue and mast cells |
A I; B IV; C II; D III
A I; B IV; C III; D II
A IV; B I; C II; D III
A IV; B II; C I; D III
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
Non-ciliated simple columnar epithelium often contains _______, which increase the surface area for secretion and absorption.
flagella
collagen fibres
microvilli
all of these
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 secretions of endocrine glands are released directly
into the skin surface
into the blood stream
into a gland duct
into the brain tissue
Phallic organs in cockroach are related to
male excretory system.
male reproductive system.
female excretory system.
female reproductive system.
The mouth parts of cockroach are
cutting and biting type.
piercing and sucking type.
sucking and rasping type.
sucking and siphoning type.
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 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
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.
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.
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
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.
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
Neuroglia are
excitable cells of neural tissue.
supporting and non-excitable cells of neural tissue.
two to three times in volume of neural tissue.
protective and excitable cells of neural tissue.
In all connective tissues, except which of the following, the cells secretes the fibres of collagen or elastin protein ?
Bone
Cartilage
Areolar connective tissue
Fluid connective tissue
Which of the following statement(s) is/are correct regarding excretory system of cockroach ?
- Excretion is performed by malphigian tubules.
- They absorb nitrogenous waste products and convert them into uric acid which is excreted out through hindgut. Hence, this insect called ammonetelic.
- In addition, fat body, nephrocytes and uricose glands also help in excretion.
Only (i)
Both (ii) and (iii)
Both (i) and (iii)
All of these