Test: Natural Resources - 3 | 25 Questions MCQ Test

QUESTION: 1

Major protein of connective tissue is:

A.
Myosin
B.
Melanin
C.
Collagen
D.
Keratin

Solution:

The organic portion or protein fibers found in connective tissues are either collagen, elastic, or reticular fibers. Collagen fibers provide strength to the tissue, preventing it from being torn or separated from the surrounding tissues.

QUESTION: 2

Light bands of muscle fibre are made of the protein:

A.
Tubulin
B.
Myosin
C.
Actin
D.
Myoglobin

Solution: Muscles are composed of bundles of single large cells (called muscle fibers) that form by cell fusion and contain multiple nuclei. Each muscle fiber contains many myofibrils, which are bundles of actin and myosin filaments organized These bands correspond to the presence or absence of myosin filaments.

QUESTION: 3

Canaliculi are found associated with:

A.
Cartilage
B.
Bone
C.
Muscle
D.
Neuron

Solution:

QUESTION: 4

Processes from osteoblasts are found in :

A.
Lamella
B.
Canaliculi
C.
Dendrites
D.
Haversian canals

Solution:

QUESTION: 5

The bone marrow is composed of :

A.
Muscle fibres and adipose tissue
B.
Areolar tissue and adipose tissue
C.
Adipose tissue and calcified cartilage
D.
Adipose tissue, areolar tissue and blood vessels

Solution:

QUESTION: 6

The longitudinal canals of the bone are called :

A.
Volkmann's canals
B.
Haversian canals
C.
Periosteum
D.
Endosteum

Solution:

QUESTION: 7

Volkmann's canals occur in :-

A.
Cartilage
B.
Bone
C.
Internal ear
D.
Liver

Solution:

QUESTION: 8

A tissue is a :

A.
group of separate organs that are coordinated in their activities
B.
group of similar cells that function together in a specialised activity
C.
layer of cells surrounding an organ
D.
sheet of cells, one layer thick

Solution:

QUESTION: 9

Endothelium of the inner surface of blood vessels in vertebrates is formed

A.
simple squamous epithelium
B.
columnar epithelium
C.
cuboidal epithelium
D.
ciliated cells

Solution:

QUESTION: 10

Cells of squamous epithelium are

A.
columnar
B.
tall with elongated nuclei
C.
flat plate-like
D.
cube like

Solution:

QUESTION: 11

The protein deposited in the dead superficial cells that make the skin epithelium impervious to water is

A.
keratin
B.
elastin
C.
collagen
D.
mucus

Solution:

Correct Answer :- a

Explanation : Keratinised stratified squamous epithelium is a compound epithelium which covers the dry surface of skin. It has many layers of epithelial cells .The deeper layers are formed by polygonal cells but superficial layers constitute horny, scale like remains of dead squamous cells .Heavy deposits of the insoluble protein keratin in the dead superficial cells make the epithelium impervious to water and highly resistant to mechanical abrasions.

QUESTION: 12

Horns of most mammals are composed of

A.
bones
B.
cartilage
C.
keratin
D.
chitin

Solution:

QUESTION: 13

Mammary glands are modified

A.
sebaceous gland
B.
sweat gland
C.
oil gland
D.
lymph gland

Solution:

QUESTION: 14

Which of the following tissue has matrix, that is the source of its structural and functional performances?

A.
connective tissue
B.
muscular tissue
C.
nervous tissue
D.
epithelial tissue

Solution:

QUESTION: 15

Wrinkling in old age is due to

A.
collagen
B.
myosin
C.
keratin
D.
actin

Solution:

QUESTION: 16

Dermis of mammalian skin is mainly composed of

A.
muscular tissue
B.
epithelial tissue
C.
connective tissue
D.
all of the above

Solution:

QUESTION: 17

Fat is abundant in

A.
liver cells
B.
alveolar tissue
C.
lymph glands
D.
adipose tissue

Solution:

Adipose tissue, or fat, is an anatomical term for loose connective tissue composed of adipocytes.

Its main role is to store energy in the form of fat, although it also cushions and insulates the body.

Obesity in animals, including humans, is not dependent on the amount of body weight, but on the amount of body fat - specifically adipose tissue.

QUESTION: 18

Tendon connects

A.
cartilage with muscles
B.
bone with muscles
C.
ligament with muscles
D.
bone with bone

Solution:

QUESTION: 19

Cartilage is produced by

A.
osteoblasts
B.
epithelium
C.
fibroblasts
D.
chondroblasts

Solution:

QUESTION: 20

Bone forming cells are

A.
osteoblasts
B.
osteoclasts
C.
chondroblasts
D.
chondroclasts

Solution:

QUESTION: 21

Bone marrow is important for

A.
breakdown of WBC
B.
production of RBC
C.
breakdown of RBC
D.
production of WBC

Solution:

QUESTION: 22

Haversian system is typically found in bones of

A.
fishes
B.
aves
C.
reptiles
D.
mammals

Solution:

QUESTION: 23

Blood is

A.
acidic
B.
alkaline
C.
variable
D.
neutral

Solution:

QUESTION: 24

Mammalian erythrocytes are

A.
circular
B.
biconcave
C.
non-nucleated
D.
all the above

Solution:

QUESTION: 25

Life span of RBC is

A.
50 days
B.
75 days
C.
120 days
D.
100 days

Solution:

RBC's also known as red blood cells are formed in the bone marrow by erythropoiesis. They have an average lifespan of 120 days. After ageing, they are selectively recognized in the spleen, liver and lymph nodes by macrophages followed by phagocytosis. This process is called eryptosis
So, the correct answer is '120 days'.

Test: Natural Resources - 3

25 Questions MCQ Test NCERT Hindi Textbooks (Class 6 to Class 12) | Test: Natural Resources - 3

Major protein of connective tissue is:

Light bands of muscle fibre are made of the protein:

Canaliculi are found associated with:

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