List of top Biology Questions

Both chasmogamous and cleistogamous flowers are present in
Best stage to observe shape, size and number of chromosomes is ______
Which of the following gastric cells indirectly help in erythropoiesis ?
Which of the following terms describe human dentition ?
Stomata in grass leaf are
Species which are closely related, morphologically similar, reproductively isolated, live in sympatric population are designated as:
Actinomorphic condition can be represented as:
Which of the following is formed by mesoderm of Gastrula?
Urinary Bladder is absent in all birds, except
DNA replication in bacteria occurs
Match the following sexually transmitted diseases (Column - I) with their causative agent (Column - II) and select the correct option.
Column - IColumn- II
(a)Gonorrhea(i)HIV
(b)Syphilis(ii)Neisseria
(c)Genital Warts(iii)Treponema
(d)AIDS(iv)Human Papilloma virus
Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation :
A disease caused by an autosomal primary non-disjunction is
Among the following characters, which one was not considered by Mendel in his experiments on pea?
Life cycle of Ectocarpus and Fucus respectively are
Homozygous purelines in cattle can be obtained by
Capacitation occurs in
Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?
The genotypes of a Husband and Wife are IAIB and IAi. Among the blood types of their children, how many different genotypes and phenotypes are possible?
In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation?
Hypersecretion of Growth Hormone in adults does not cause further increase in height, because
Coconut fruit is a
A decrease in blood pressure/volume will not cause the release of
In case of poriferans the spongocoel is lined with flagellated cells called:
The region of Biosphere Reserve which is legally protected and where no human activity is allowed is known as