Multiple Choice QuestionsIn Pheretima, septa are absent between which segments?
3/4 and 9/10
4/5 and 8/9
5/6 and 7/8
7/8 and 6/7
During emergency which of the following hormone is secreted?
Aldosterone
Thyroxine
Adrenalin
Calcitonin
In cockroach, larval and nymphal characters are maintained by
ecdysone
salivary glands
parotid gland
juvenile hormone
Which of the following is a transparent tissue?
Tendon
Fibrous cartilage
Hyaline cartilage
All of these
C.
Hyaline cartilage
Hyaline cartilage is the most abundant kind of cartilage with no fibres and transparent matrix. It is found upon articular surfaces at joints of long bones. It helps to from the nose, larynx, trachea, bronchi and bronchial tubes leading to the lungs.
Fibrocartilage (fibrous cartilage) carries thick dense bundles of white collagen fibres in matrix. They are the strongest cartilage. They occur in joints between vertebrae and also pubic symphysis.
Tendon is a very dense, strong fibruous connective tissue made of collagen fibres. Tendon connects a skeletal muscle to a bone.
Which of the following cell type is capable of giving rise to other cell types in sponges?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes
Animals having a built in thermostat to maintain constant body temperature are known as
biothermic
poikilothermic
oligothermic
homeothermic
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