Which of the following is the correct scientific name of wheat derived by binominal nomenclature?
Triticum Vulgare
Triticum aestivum
Oryza sativa
Zea mays
Select the incorrect match.
Citric acid - Aspergillus niger
Streptokinase - Streptococcus
Butyric acid - Clostridium acetobutylicum
Cyclosporin A - Monascus purpureus
Which of the following statements is correct regarding menstrual cycle?
LH induces rupturing of Graafian follicle
Proliferative phase is characterised by the increased production of progesterone
Corpus luteum secretes large amount of estrogen
Both LH and FSH attain a peak level in secretory phase
Match column I with column II and select the correct option from the codes given below.
Column I | Column II |
A. Commensalism | (i) One inhibited, other unaffected |
B. Parasitism | (ii) One benefitted, other unaffected |
C. Mutualism | (iii) Both are benefitted |
D. Amensalism | (iv) One benefitted, other harmed |
A - (iv), B - (ii), C- (iii), D - (i)
A - (iii), B - (iv), C - (ii), D - (i)
A - (ii), B - (iv), C - (iii), D - (i)
A - (ii), B - (iv), C - (i), D - (iii)
Which of the following is used as bioinsecticide?
Bacillus polymyxa
Cylindrospermum licheniforme
Phytophthora palmivora
Chrysanthemum cinerarifolium
If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
25%
100%
No chance
50%
A.
25%
Thalassaemia is an autosomal recessive disorder.
In the given case, both the partners are carriers for thalassaemia i.e., are heterozygous. Persons homozygous for thalassaemia suffer from severe haemolytic anaemia. Heterozygous persons are also not normal, but show the defect in a less severe form (thalassaemia minor). The probability of their progeny being affected with the disease i.e., with homozygous genotype is 25% only as shown below:
Parents : Tt Tt
Offspring: TT : Tt : tt
1 : 2 : 1
Normal- TT (25%)
Carriers- Tt (50%)
Affected- tt (25%)
The correct sequence ofstages in the evolution of modern man (Homo sapiens), is
Homo erectus, Australopithecus, neanderthal man, cro-magnon man, modern man
Australopithecus, Homo erectus, neanderthal man, cro-magnon man, modern man
Neanderthal man, Australopithecus, cromagnon man, Homo erectus, modern man
Australopithecus, Neanderthal man, cromagnon man, Homo erectus, modern man
Identify the parts labelled A, B, C and D in the given figure and select the correct option.
A- Scutellum, B- Epiblast, C- Coleoptile, D- Coleorhiza
A- Scutellum, B- Coleorhiza, C- Coleoptile, D- Epiblast
A- Scutellum, B- Coleoptile, C- Coleorhiza, D- Epiblast
A- Epiblast, B- Coleoptile, C- Coleorhiza, D- Scutellum
Match column I with column II and select the correct option from the given codes.
Column I | Column II |
A. Parthenocarpy | (i) Seed formation without fertilisation |
B. Polyembryony | (ii) More than one embryo in same seed |
C. Apomixis | (iii) Seedless fruits without fertilisation |
D. Somatic embryogenesis | (iv) Embryo develops from a somatic cell |
A- (iv), B- (ii), C- (iii), D- (i)
A- (iii), B- (ii), C- (i), D- (iv)
A- (i), B- (iv), C- (iii), D- (ii)
A- (ii), B- (iii), C- (i), D- (iv)