Chitin in cockroach is absent in____________?
A. Epicuticle
B. Exocuticle
C. Endocuticle
D. All of these
Biology Mcqs
In man which organisms cause abscesses on the skin of arms or legs?
In man which organisms cause abscesses on the skin of arms or legs?
A. Ascaris
B. Bacteria
C. Ring worm
D. Suinea worm
In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen?
In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen?
A. Arthropods
B. Chordata
C. Annelida
D. Echinodermata
In all arthropods,the body is covered with a chittinous cuticle which is secreted by the____________?
In all arthropods,the body is covered with a chittinous cuticle which is secreted by the____________?
A. Endodermis
B. Mesophyll
C. Chitin
D. Epidermis
All insects have how many parts of legs?
All insects have how many parts of legs?
A. 4
B. 2
C. 3
D. 6
In mouth cavity of many molluscs there is a rasping tongue like structure_________provided with many horny teeth.
In mouth cavity of many molluscs there is a rasg tongue like structure_________provided with many horny teeth.
A. Ligule
B. Radula
C. Mantle
D. Muscle
Snails belong to__________?
Snails belong to__________?
A. Cephalopodsxc
B. Gastropods
C. Bivalves
D. Athropods
It is stiff rod of special cells surrounded by connecive tissue present in the mid -dorsal region and appears in the embryos of all chordates
It is stiff rod of special cells surrounded by connecive tissue present in the mid -dorsal region and appears in the embryos of all chordates
A. Placenta
B. Notochord
C. Cranianta
D. Ligule
The phylum chrordata comprise about how many species?
The phylum chrordata comprise about how many species?
A. 25,000
B. 50,000
C. 100,000
D. 10,00,000
Sub- phylum vertebrate is also known as__________?
Sub- phylum vertebrate is also known as__________?
A. Pisces
B. Craniata
C. Aves
D. Amphibia