Biology
Name the following.
(a) The layer of the eyeball that is sensitive to the light.
(b) One harmful effect of ozone layer depletion.
(c) A disc-like structure, which plays a role in nutrition, respiration and excretion of embryo.
(d) The point of attachment of non-sister chromatids of homologous chromosomes where crossing over takes place.
(e) Name the organism studied for industrial melanism.
Related Questions
Chief function of lymphocytes in mammals is
- phagocytosis
- coagulation
- oxygen transport
- None of the above
Shreya placed a plant near the window in her kitchen. She observed that the stem started growing towards the side from where sunlight was coming. Which of the following is/are involved in the process described above?
(a) Auxin
(b) Gibberellin
(c) Cytokinin
(d) Abscisic acid- Only a
- Only a and c
- Only a, b and c
- Only a, c and d
Arrange and rewrite the terms in each group in the correct order so as to be in a logical sequence beginning with the term that is underlined.
(a) Reproductive age, Menarche puberty, Menstruals, Menopause
(b) Glucose, CO2 and H2O, Light and Chlorophyll, Oxygen
(c) Axon, Nissl's granules, Cyton, Dendrites
(d) Adrenal gland, Epinephrine, Pituitary gland, Adrenocorticotropic.
(e) Genes, Chromosome, Allele, Chromatin
Fill in the blanks with suitable words.
Blood in human beings flows (a) …………… in the heart before it completes (b) …………… round. It is comprised of one short pathway, i.e. (c) …………… circulation and another long pathway, i.e. (d) …………… circulation. Due to this reason, the blood flow in humans is known as (e) …………… circulation.