Reticulate venation in leaves is the characteristic feature of dicot plants. which of the following monocot plants possesses exceptionally reticulate venation
Options
(a) smilax (b) alocasia (c) dioscorea (d) all of these
Correct […]
Pteridophytes were well adapted and advanced for survival on land but they cannot be much successful and widespread as gymnosperms and angioserms because they lack
Options
(a) large bodies with secondary growth (b) […]
In pteridophytes, spores germinate to give rise to inconpicuous, small multicellur free living photosynthetic thalloid gametophyte called
Options
(a) proonema (b) prothallus (c) archegonia (d) ovule
Correct Answer:
prothallus
Explanation:
No explanation available. […]
When a large number of sessile flowers grows from a suppressed rachis giving rise to a globose structure the inflorescence is called
Options
(a) capitulum (b) umbel (c) catkin (d) turmeric
Correct Answer: […]
What is common in whale, bat and rat
Options
(a) The absence of neck (b) muscular diaphragm between thorax (c) Extra abdominal tests to avoid high temperature of body (d)
Correct Answer: […]
In a plant organ, which is converted by periderm and in which the stomata are absent, some gaseous exchange still takes in through
Options
(a) aerenchyma (b) trichomes (c) pneumatophores (d) lenticles
Correct […]
A plant which is represented by only root. It means root performs the function of assimilation and reproduction and the plant is
Options
(a) podostemon (b) wolffia (c) cuscuta (d) utricularia
Correct Answer: […]
Presence of cholorophyll- a,c, fucoxanthin with mannitol and laminarian as reserve food material are the characteristics of
Options
(a) Chlorophyceae (b) Cyanophyceae (c) Rhodophyceae (d) Phaeophyceae
Correct Answer:
Phaeophyceae
Explanation:
No explanation available. […]
At retrogressive metamorphosis, the urochordate larva
Options
(a) loss notochord (b) loss tail (c) experience reduction of nervous system to a visceral ganglion (d) all the above
Correct Answer:
all the above
Explanation: […]
Axon hillock is
Options
(a) a group of axon (b) a swelling of axon (c) the part of cyton from where the axon arises (d) plasma membrane of axon
Correct Answer:
plasma membrane […]
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