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
In cockroach, larval and nymphal characters are maintained by
ecdysone
salivary glands
parotid gland
juvenile hormone
In frog heart, there are cardiac muscles which consists of fibres called
Purkinje fibres
myonemes
telodendria
columnae carnae
Malphigian tubules are
excretory organs of insects
excretory organs of frog
respiratory organs of insects
endocrine glands of insects
Inner lining of blood vessels is formed by
ciliated epithelium
squamous epithelium
cubical epithelium
columnar epithelium
B.
squamous epithelium
Inner lining of blood vessels is formed by squamous epithelium. It consists of a layer of thin, flat, scale- like cells with prominent nuclei. The cells have irregular boundaries that fit closely into those of neighbouring cells.
Ciliated epithelium is found in the respiratory tract and in the fallopian tubes of women. It helps in the movement of particles out of the body using hair like structures, cilia.
Cuboidal epithelium is found in organs that are specialized for secretion such as salivary glands and thyroid follicles.
Columnar epithelium is uni- layered. It is found in lining of most of the digestive tract such as stomach, small intestine and large intestine.
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