Which of the following is ideal for studying meiosis?
Gamete
Pollen
Microsporangium
Root
C.
Microsporangium
The microsporangium contains microspore mother cells, which undergo meiosis to form microspores. Gamete and pollen are haploid in nature. Pollen (microspore) is the first cell of male gametophyte generation.
To which of the following flower 'synandrous' condition is found?
Sunflower (Helianthus sp)
Gourd (Cucurbita sp)
Pea (Pisum sativum)
Lemon (Citrus sp)
Which one of the following conditions in chromosome number is called monosomy?
2n + 1
2n + 2
2n - 1
2n - 2
Shorter generation time of E. coli compared to eukaryotes may be explained on the basis of
shape
large surface : volume ratio
presence of cell wall
absence of organelles
Division in a bacterial cell is carried out through
multiple fission
binary fission
budding
plasmotomy
Which one of the following bacterium is used extensively as biopesticide?
Bacillus subtilis
Bacillus thuringiensis
Streptococcus lactis
Lactobacillus acidophilus
Which one among the following is just a cloning plasmid not an expression plasmid?
pBAD-18-Cam
pBCSK
pUC18
pET
'Royal jelly' is secreted from
hypopharyngeal gland
salivary gland
milk gland
integumentary gland
Liver damage caused by excessive drinking of alcohol is called
hepatitis
dematitis
liver cirrhosis
liver diarrhoea