Multiple Choice QuestionsWhich one of the following structures in Pheretima is correctly matched with its function?
Clitellum - Secretes cocoo
Gizzard - Absorbs digested food
Setae - Defence against predators
Setae - Defence against predators
Which one of the following aspects is an exclusive characteristic of living things?
Isolated metabolic reactions occur in vitro
Increase in mass from inside only
Perception of events happening in the environment and their memory.
Perception of events happening in the environment and their memory.
Which one of the following structures between two adjacent cells is an effective transport pathway?
Plasmodesmata
Plastoquinones
Endoplasmic reticulum
Endoplasmic reticulum
The kind of epithelium which forms the inner walls of blood vessels is
cuboidal epithelium
columnar epithelium
ciliated columnar epithelium
ciliated columnar epithelium
If for some reason our goblet cells are non -functional, this will adversely effect
Production of somatostatin
secretion of sebum from the sebaceous glands
maturation of sperms
maturation of sperms
In which one of the following organism, its excretory organs are correctly stated?
Humans- Kidneys, sebaceous glands and tear glands
Earthworm -Pharyngeal, integumentary and septal nephridia
Cockroach - Malpighian tubules and enteric caeca
Cockroach - Malpighian tubules and enteric caeca
B.
Earthworm -Pharyngeal, integumentary and septal nephridia
In earthworm, the excretory system is made up of many segmentally arranged microscopic coiled tubes called nephridia. These are ectodermal in origin and analogous to the vertebrate kidney.
In Pheretima, following three types of nephridia are seen.
(i) Pharyngeal nephridia - Situated on either side of pharynx and oesophagus in 4, 5 and 6 segments.
(ii) Integumentary nephridia - Scattered in the body wall, seen from 7th segment onwards
(iii) Septal nephridia - Largest nephridia attached to both faces of each intersegment septum behind 15th segment
The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is
cuboidal
glandular
ciliated
ciliated
Uric acid is the chief nitrogenous component of the excretory products of
man
earthworm
cockroach
cockroach
If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is
excretory fluid
coelomic fluid
haemolymph
haemolymph
The cell junctions called tight, adhering and gap junctions are found in
muscular tissue
connective tissue
epithelial tissue
epithelial tissue
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