Effective filtration pressure in the glomerulus in kidney of man is about
Vectors include
Which one of the following doctors performed the first heart transplant ?
-
Solution
The first human heart transplant was performed on 3rd December, 1967 by a team of 30 doctors headed by prof. Christian Barnard on 55 years old Louis Washkansky at the Groote Schurr Hospital, Cape Town, South Africa. Inspite of the operation by a leading surgeon Washkansky died on 21st December, 1967.
Which one of the following phylais correctly matched with its two general characteristics?
During germination which cell organelle converts fatty acid into soluble carbohydrate?
Km is related to
Which of the following crop plant is not matching as correct pair with its variety ?
(1) Wheat – Himgiri
(2) Brassica – Pusa Gaurav
(3) Cauliflower – Pusa Komal
(4) Chilli – Pusa sadabahar
(5) Okra – Pusa sawani
Syngamy means
-
Solution
Syngamy is the process of fusion of male and female gametes to form diploid zygote. It involves the close association of gametes and result in formation of a zygote.
Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as:
-
Solution
Genetic drift is random change in allele number and frequency in a gene pool due to chance (e.g., small sizeof population). It is caused by sampling error or error in gene pool sample that is to form the next generation.The sampling gene pool is generally small in size. Variability is also limited.
Water in plants is transported by ascent of sap takes place through :
DNA replication is an ______ process and ______ energy.
-
Solution
DNA replication is an energy-consuming process that must have an input of energy to proceed. Energy is provided in the breaking of the triphosphate tails of each nucleotide.
DIRECTIONS: Question contain STATEMENT-1 (Assertion) and STATEMENT-2 (Reason).Question has 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct.
Statement 1 :Botany deals with the study of plants and zoology deals with the study of animals.
Statement 2 : Biology is the study of living beings
-
Solution
Biology (Bio-living, logy-science). The study of living beings is called biology. Living beings on earth are mainly classified into two forms-plants and animals. Botany and zoology are the fundamental branches of biology. Word botany has been derived from greek word botane which means pasture or plants and zoology has been derived from word zoo-animals, logos-study. The ophrastus and Aristotle is called the father of botany and father of zoology respectively
Periderm is formed from –
Major source of liquid hydrocarbon is
-
Solution
Euphorbia antisyphilitica,yields large amount of latex which contain long chain of hydrocarbons.
The second maturation division of the mammalian ovum occurs
-
Solution
In Oogenesis, the second maturation division occurs until after the ovum has been penetrated by a sperm. Oogenesis involves the formation of haploid female gametes, ova, from this diploid egg mother cells, oogonia of ovary of female organism.
The silkworm’s silk is the product of
Ferredoxin is a constituent of
Carbon dioxide labelled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light in-dependent stage in photosynthesis. Which compound would be the first to contain the 14C?
Epithelial cells of the intestine involved in food absorption have on their surface
-
Solution
Presence of microvilli on the epithelial cells of intestine increases the surface area for absorption of food.
Identify the correctly matched pair.
-
Solution
Kyoto Protocol (1997) : International conference held in Kyoto, Japan obtained commitments from different countries for reducing overall greenhouse gas emissions at a level 9% below 1990 level by 2008-2012.Montreal Protocol (1987) : Industrialized countries agreed to limit production of chloroflourocarbons to half the level of 1986.