Home
Class 12
BIOLOGY
Read the following statements and select...

Read the following statements and select the correct option
(i) Blood cells secrete fibres of structural proteins called collagen and elastin
(ii) Neuroglial cells protect and support the nephrons
(iii) Osteocytes are present in spaces called lacunae
(iv) Striated muscle fibres are bundled together in a parallel fashion
(v) Biceps are involuntary and striated.

A

c and d

B

b and d

C

a and c

D

a,d and e

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

Read the following statement and select the correct option Statement 1 : Cardiac muscle of the heart is striated and has intercalated discs between its fibres (cells) Statement 2 : It provides quick, powerful and rhythmic contractions to the heart.

Read the statements and choose the correct option 1.Neuroglial cells protect and support the neurons 2.Cartilage has a hard and nonpliable matrix rich in magnesium salts 3.Smooth muscles are striated 4.Chondrocytes are bone forming cells 5. Biceps are parallely bundled.

Consider the following four statements (i)-(iv) and select the correct option (i) Fish heart contains only oxygenated blood (ii) Closure of A-V valves produces the second heart sound (iii) The vascular connection between the digestive track and kidney is called hepatic portal system (iv) Purkinje fibres are nerve fibres present in the heart wall.

Read the following statements and select the correct option w.r.t cell theory. (i) All living organisms are composed of cells and products of cells. (ii) Viruses are exception to cell theory because they are cellular particles. (iii) All cells arise from pre-existing cells. (iv) Activities of an organisms are the outcome of sum total of activities and interactions of its constituent cells. (v) Rudolf Virchow gave final shape to cell theory.

Read the following statements carefully and select the correct ones. Cardiac fibre are branched with one or more nuclei. (ii) Smooth muscles are unbranched and cylinedrical. (iii) Skeletal muscle can be branched or unbranched. (iv) Smooth muscle are non-striated.

Read the following statements and select the correct option : I. In the skeletal muscles fibre, large number of myofilaments are arranged in the sarcoplasm. II. The central part of an anisotropic band where the only thick , filament is present and thin filament is absent is called 'A' band. III. In the resting state , a tropomyosin protein masks the active b binding sites for myosin on the active filaments . IV. The junction between a motor neuron and the sarcolemma of the muscle fibres is called motor-end plate.

Read the following statements and select the correct ones (i) Nodal tissue is specialised cardiac musculature in human heart which has the ability to generate action potential due to an external stimuli (ii) Position of SAN - right corner of right atrium (iii) Position of AVN - right corner of ventricle (iv) AV bundle continues from AVN (v) Purkinje fibres are modified cardiac muscle fibres that originate from the atrioventricular node and spread into the two ventricles.

Consider the following four statements and select the correct option stating which ones are true (T) and which ones are false (F) ? (i) Proteins contribute 6-8 of the blood plasma (ii) Plasma contains very high amount of minerals (iii) Plasma without the clotting factors is called serum (iv) Glucose, amino acids, lipids, etc, are also present in the plasma as they are always in transit in the body.