Blue- green algae is found in
Cycas
Pinus
Scales of Marchantia
Riccia
A.
Cycas
The coralloid roots ofCycas has an algal zone which consists of Blue- Green algaeAnabaena cycadealandNostoc punctiforme.
Total number of bones in the hind limb of a man is
21
23
27
30
D.
30
Hind limb of man consists of 30 bones which are as follows:
A definite number of segments are found in
slug
earthworm
leech
tapeworm
C.
leech
Leech belongs to Phylum- Annelid. A definite number of segments,ie, 33 segments are found in leech.
Turpentine oil is obtained from
Pinus
Cycas
Cedrus
Delbergia
A.
Pinus
Turpentine is a fluid obtained by the distillation of resin from Pinus pinaster trees.
Biologically most resistant plant material is
sporopollenin
cutin
lignin
suberin
A.
sporopollenin
Sporopollenin is biologically most resistant plant material and is present in pollen exine. It is contributed by the tapetum layer of the another wall.
In gametophyte of fern
prothallus is independent from sporophyte
prothallus is attached with sporophyte
it is main plant body
a structure attached with rhizome
A.
prothallus is independent from sporophyte
A gametophyte is the plant that produces gametes. The fern gametophyte is a small, bisexual, heart- shaped plant called a prothallus.Sporophyte is the asexual and usually diploid phase that produces spores from which the gametophyte arises. A fern gametophyte prothallus is independent from sporophyte.
A secretion that digests both carbohydrates and proteins is
ptyalin
pepsin
pancreatic juice
saliva
C.
pancreatic juice
Pancreatic juice acts upon both carbohydrates and proteins.
Which of the following is an edible fungus?
Agaricus
Albugo
Rhizopus
Puccinia
A.
Agaricus
Agaricus is an edible mushroom. It is a saprophytic fungus, which grows during rainy season, in moisture grassy places and in richly manured unploughed fields.
The lack of fruit formation in gymnosperm is due to
absence of fertilization
lack of seeds
naked ovule
sheding of immature seed
C.
naked ovule
In Gymnosperms, ovule lacks ovary and ovary wall that forms fruit after maturation in Angiosperms.
In living beings ammonia is converted into urea through
ornithine cycle
citrulline cycle
fumarine cycle
arginine cycle
A.
ornithine cycle
Ornithine combines with one molecule of NH3 and CO2 to produce citrulline. Citrulline combines with another molecule of NH3 to form arginine. Arginine is broken down into urea and ornithine which repeats the cycle.