(A) Pollen grains inside the anther (B) Germinated pollen grain with two male gametes (C) Seed inside the fruit (D) Embryo sac inside the ovule... View Article
a) Lysine b) Valine c) Tyrosine d) Glutamic acid Answer: (a) Further Reading: List of 25 Important Topics in Biology for Competitive Exams... View Article
a) Active immunity is quick and gives full response b) Foetus receives some antibodies from mother, it is an example for passive immunity c) When... View Article
a) Anabaena and volvox b) Chlorella and spirulina c) Laminaria and Sargassum d) Gelidium and Gracilaria Answer: (b) Further Reading: List of... View Article
a) Cell is metabolically active, grows but does not replicate its DNA b) Nuclear division takes place c) DNA synthesis or replication takes place... View Article
a) Two b) Three c) Zero d) One Answer: (d) Further Reading: List of 25 Important Topics in Biology for Competitive Exams List of Important... View Article
a) Effluents of primary treatment b) Activated sludge c) Primary sludge d) Floating debris Answer: (b) Further Reading: List of 25 Important... View Article
(a) Ileum is a highly coiled part (b) Vermiform appendix arises from duodenum (c) Ileum opens into the small intestine (d) Serosa is the... View Article
(a) Caseinogen to casein (b) Pepsinogen into pepsin (c) Protein into polypeptides (d) Trypsinogen into trypsin Answer: (d) Further Reading:... View Article
(a) Depolarisation of ventricles (b) Repolarisation of ventricles (c) Repolarisation of auricles (d) Depolarisation of auricles Answer:... View Article
Certain fish such as the catfish and clingfish do not have scales. However, they do have other layers of materials which cover the skin - such as... View Article
In fish, the primary function of scales is to provide protection against predators as well as the external environment. Further Reading: List... View Article
Arapaima, a genus of fish under the Arapaimidae family, are known to have the largest scales among fish. They are also among the world’s... View Article
Fish scales are edible as long as they are thoroughly washed and properly cooked. Fish scales are also known to contain collagen, a fibrous... View Article
Cycloid scales are found in bony fishes such as salmon and carp. Most cycloid scales have a smooth texture and are uniform in size. Growth rings... View Article
