Which one of the following pairs of food components in humans reaches the stomach totally undigested?
Protein and starch
Starch and fat
Fat and cellulose
Fat and cellulose
C.
Fat and cellulose
In humans, starch is digested in the buccopharyngeal cavity. Cellulose is not digested in the humans because cellulose contains β -1, 4-linkages and vertebrates themselves do not possess any enzymes capable of hydrolyzing β-1, 4 - linkages. Protein is digested in stomach and fat in the small intestine.Thus in the given options, fat and cellulose reach totally undigested in the stomach of humans
Which one of the following has haplontic life cycle?
Funaria
Polytrichum
fully developed foetus and placenta
fully developed foetus and placenta
Stroma in the chloroplasts of higher plants contains
light -independent reaction enzymes
Light -dependent reaction enzymes
ribosomes
ribosomes
Which one onf the following groups of animals is bilaterally symmetrical and triploblastic?
Coelenterates (cnidarians)
Aschelminthes (roundworms)
ctenophores
ctenophores
Uric acid is the chief nitrogenous component of the excretory products of
man
earthworm
cockroach
cockroach
The correct sequence of plants in a hydrosere is
Oak → Lantana → scirpus→Pistia→Hydrilla→Volvox
Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
Pista → Volvox → Scirpus → Hydrilla → Oak → Lantana
Pista → Volvox → Scirpus → Hydrilla → Oak → Lantana
A change in the amount of yolk and its distribution in the egg will effect
formation of a zygote
the pattern of cleavage
number of blastomeres produced
number of blastomeres produced
The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is
cuboidal
glandular
ciliated
ciliated
