STD 12 - 3. reproductive health — NEET STD 11 Science — Question

Which of the following characteristic features always holds true for the corresponding group of animals ?

Cells of this tissue are living and show angular wall thickening. They also provide mechanical suport. The tissue is

Placenta acts like a

Outer pleural membrane is in close contact with the …..

Other than the kidneys, lungs, liver and skin also help in the elimination of excretory wastes. Which of the following statements are not true ?
(i) Our lungs remove large amounts of CO₃ 200 ml/min and also significant quantities of water every day.
(ii) Liver, the largest gland in our body, secretes bile-containing substances like bilirubin, biliverdin, cholesterol, degraded steroid hormones, vitamins and drugs.
(iii) The sweat and sebaceous glands in the skin can eliminate certain substances through their secretions.
(iv) Sweat produced by the sweat glands is a watery fluid containing NaCl, large amounts of urea, citric acid, etc.
(v) Primary function of sweat is the removal of some of the wastes mentioned above, it also facilitate a cooling effect on the body surface.
(vi) Sebaceous glands eliminate certain substances like sterols, hydrocarbons and waxes through sebum.

In metazoa one of the following is responsible for locomotion and movement of organs

Trachea divides into right and left

Which of the following statements about muscle is true ?
(i) Cardiac muscle tissue is a contractile tissue present only in the heart.
(ii) Cell junctions fuse the plasma membranes of cardiac muscle cells and make them stick together.
(iii) Intercalated discs is a communication junctions of skeletal muscles.
(iv) Communication junctions of skeletal muscles allow the cells to contract as a unit.
(v) Cardiac muscle is an involuntary muscle.

________ are used in detergent formulations and are helpful in removing oily stains from laundry.