A common biocontrol agent for the control of plant diseases is
Options
(a) Baculovirus (b) Bacillus thuringiensis (c) Glomus (d) Trichoderma
Correct Answer:
Trichoderma
Explanation:
A common biocontrol agent for control of plant diseases […]
Which one of the following structure between two adjacent cells is an effective transport pathway?
Options
(a) Plasmodesmata (b) Plastoquinones (c) Endoplasmic reticulum (d) Plasmalemma
Correct Answer:
Plasmodesmata
Explanation:
Plasmodesmata are the structure […]
Male and female gametophytes are independent and free living in
Options
(a) Mustard (b) Castor (c) Pinus (d) Sphagnum
Correct Answer:
Sphagnum
Explanation:
Sphagnum is a bryophyte in which male and female gametophytes are […]
DNA or RNA segment tagged with a radioactive molecule is called
Options
(a) Vector (b) Probe (c) Clone (d) Plasmid
Correct Answer:
Probe
Explanation:
No explanation available. Be the first to write the […]
The chief water conducting elements of xylem in gymnosperms are:
Options
(a) vessels (b) fibres (c) transfusion tissue (d) tracheids
Correct Answer:
tracheids
Explanation:
Tracheids are chief water conducting elements of xylem in […]
Coiling of garden pea tendrils around any support is an example of:
Options
(a) thigmotaxis (b) thigmonasty (c) thigmotropism (d) thermotaxis
Correct Answer:
thigmotropism
Explanation:
The coiling of garden pea tendrils around any support […]
Carrier ions like Na⁺ facilitate the absorption of substances like:
Options
(a) Amino acids and glucose (b) glucose and fatty acids (c) fatty acids and glycerol (d) fructose and some amino acids
Correct Answer: […]
The technical term used for the androecium in a flower of China rose (Hibiscus rosa sinensis) is:
Options
(a) Monadelphous (b) Diadelphous (c) Polyandrous (d) Polyadelphous
Correct Answer:
Monadelphous
Explanation:
Hibiscus belongs to […]
C₄ plants are more efficient in photosynthesis than C₃ plants due to:
Options
(a) Higher leaf area (b) Presence of larger number of chloroplasts in the leaf cells (c) Presence of thin cuticle (d) […]
The genetically-modified (GM) brinjal in India has been developed for:
Options
(a) insect-resistance (b) enhancing shelf life (c) enhancing mineral content (d) drought-resistance
Correct Answer:
insect-resistance
Explanation:
No explanation available. Be the first […]
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