The electromagnetic radiation of short wavelengths is called- X-rays.
Who coined the term cell membrane or plasma membrane- C. Nugeli & C. Cramer.
The animals that eat upon the members of their own family are called- Cannibiles.
The organizational unit of the biosphere is termed as- Ecosystem.
The development of an egg into a complete individual without fertilization is known as- Parthenogenesis.
The mode of reproduction in bacteria is by- Conjugation.
Inflammation of the lungs due to infection is called- Pneumonia.
The blood flow between the right atrium and the right ventricle is regulated by the- Tricuspid valve.
Which cells protect the body against invading micro-organisms and remove dead cells from the body- White Blood Corpuscles or Leucocytes.
Which is the largest part of the brain- the Cerebrum.
A gonadotropic hormone that directly stimulates the gonadal functions in both males and females is- Follicle Stimulating Hormone (FSH).
Which hormone directly stimulates the smooth muscles of the uterus and causes the contraction, and helps in the delivery of foetus- Oxytocin.
Apical dominance can be overcome by the application of- Cytokinin.
Lack of which element has made some plants insectivorous- Nitrogen.
Plants absorb the element nitrogen in the form of- Nitrates.
Deficiency of which macronutrient causes extensive chlorosis and necrosis on leaves- Magnesium.
The roots of leguminous crop bear nodules, which contain nitrogen-fixing bacteria called- Rhizobium.
Deficiency of thyroxine hormone in children from the time of birth cause- Cretinism.
Which cells synthesize, store and secrete two hormones namely insulin and glucagon in Pancreas- Islets of Langerhans.
The mature sperms are stored in the- Epididymis.
The glandular accessory organ which produces the largest proportion of semen is- Seminal vesicle.
Rhodopsin pigment is present in which cell- Rod Cell.
Krause’s corpuscles are concerned with the sensation of- Cold.
What is the function of the ‘Iris’ in the eye- Alter the size of the pupil.
Cushing’s disease is caused by hyperactivity of- Glucocorticoids.
The most important hormone in initiating and maintaining lactation after birth is- Prolactin.
Germinal epithelium of testes forms- Sperms.
Agening starts with the disappearance of- Thymus gland.
What is the structural and functional unit of the Nervous System- Neuron.
The undifferentiated tissue at the root and the shoot tip, responsible for the increase in the length of the plant is- Apical Meristem.
Which cell help in the transport of oxygen in the blood- Red blood corpuscles or Erythrocytes.
The cell walls of Parenchyma are made up of- Cellulose.
An unorganized, undifferentiated mass of cells formed in tissue culture is called- Callus.
Hershey and Chase experiment with bacteriophage showed that- DNA is the genetic material.
Who introduced the term biodiversity- Walter Rosen.
Which forest is known as the lungs of the planet earth- Amazon rain forest.
Which endoparasites of humans do show viviparity- Trichimella Spiralis.
Cryopreservation of gametes of threatened species in viable and fertile conditions can be referred to as- Advanced ex-situ conservation of biodiversity.
The species confined to a particular region and not found elsewhere is termed as- Endemic.
Rachel Carson’s famous book ‘Silent Spring’ is related to- Pesticide pollution.
In animals weakening of bones and teeth is caused by pollutant- Fluoride.
A common indicator organism of water pollution is- Escherichia Coli.
In a photosynthesis experiment, plant growth could not be best when exposed to- Red and blue lights.
Energy is transferred from the light reaction to the dark reaction step by- ATPorAdenosine Triphosphate.
A balance between atmospheric CO2 and O2 is maintained by- Photosynthesis.
Under conditions of high light intensity and limited CO2 supply, the process of photorespiration protects the plants from- Photooxidative Damage.
Which plant leaves do not show kranz anatomy- C3 Plants.
Which plants carry out photosynthesis at night- Chenopodium & Euphorbia.
Which element constitutes the centre part of the chlorophyll- Magnesium.
The bundle sheath cells and mesophyll cells are well developed with chloroplasts is termed- Kranz Anatomy.
