Download PDF
Free download in PDF Botany Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
Cell organelle covered by single unit membrane is:
[A]
Peroxisomes
[B]
Lysosome
[C]
Glyoxisome
[D]
All of these
42
Blue-green alga that causes red blooms is:
[A]
Anabaena
[B]
Gleacapsa
[C]
Trichodesmium
[D]
Nostoc
43
Prokaryotic genetic material is:
[A]
Circular DNA without his tones
[B]
Liner DNA without his tones
[C]
Liner DNA + his tones
[D]
Circular DNA + his tones
Answer: Circular DNA without his tones
44
Abscission layer developed during leaf fall is made of:
[A]
Parenchymatous cells
[B]
Cork cells
[C]
Sclerenchymatous cells
[D]
Sclerenchymatous cells
Answer: Parenchymatous cells
45
Gingerly oil (till) is got from:
[A]
Sesamum indicum
[B]
Linus usitatissimum
[C]
Cocos nucifera
[D]
Brassica rapa
46
In meios-I, the Centro mere undergoes:
[A]
Division but the daughter chromosomes do not separate
[B]
Division between prophase and metaphase
[C]
Division between anaphase and Interphase
[D]
No division
47
Morphine is obtained from:
[A]
Papaver somniferum
[B]
Rauwolffia serpentine
[C]
Aconitum nacelles
[D]
Cinchona officinalis
Answer: Papaver somniferum
48
Coir of commerce is obtained from:
[A]
Endocarp of coconut
[B]
Mesocarp of coconut
[C]
Stem of jute
[D]
Leaves of coconut
Answer: Leaves of coconut
49
The components of an ecosystem are:
[A]
Trees and weeds
[B]
Plants and animals
[C]
Man and plants
[D]
Biotic and abiotic
Answer: Biotic and abiotic
50
The 10% energy transfer law of food chain was given by
[A]
Lindmann
[B]
Lederberg
[C]
Weismann
[D]
Lindley
51
Double fertilization is found in:
[A]
Angiosperms
[B]
Bryophytes
[C]
Gymnosperms
[D]
Pteridophytes
52
The term water potential was proposed by:
[A]
Slatyer and Taylor
[B]
Godlewski
[C]
Dixon and Jolly
[D]
J. C. Bose
Answer: Slatyer and Taylor
53
A plant having two types of haploid structures in its life cycle is known as:
[A]
Haplobiontic
[B]
Diplobiontic
[C]
Haplontic
[D]
Diplontic
54
A chain of amino acids joined by peptide bonds is called as
[A]
Peptide chain
[B]
Polypeptide chain
[C]
Polyamino acid chain
[D]
Nucleotide chain
Answer: Polypeptide chain
55
Root cap is not found n:
[A]
Mesophytes
[B]
Hydrophytes
[C]
Xerophytes
[D]
Halophytes
56
The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to
Purchase fresh hybrid seed every year because:
[A]
Hybrid vigour is not long standing due to inbreeding depression
[B]
They are not allowed to grow their own seed
[C]
It is always associated with 4ncreased heterozygosity
[D]
Government has accepted Dunkel’s proposals
Answer: Hybrid vigour is not long standing due to inbreeding depression
57
Fragrant flowers with well developed nectarines are an adaptation for:
[A]
Anemophily
[B]
Ornithophily
[C]
Entamophily
[D]
Hydrophily
58
Soil salinity is measured by:
[A]
Potometer
[B]
Porometer
[C]
Conductivity meter
[D]
Calorimeter
Answer: Conductivity meter
59
The scutellum of the gram embryo is a:
[A]
Vestigial organ
[B]
Photosynthetic organ
[C]
Absorptive organ
[D]
Protective organ
60
The genes, which remain confined to differential region of ‘Y’ chromosome, are:
[A]
Autosomal genes
[B]
Holandric genes
[C]
Sex linked genes
[D]
Mutant genes
Take Mock Tests