Which of the following represents the edible part of the fruit of litchi?
Pericarp
Mesocarp
Juicy aril
Endocarp
Biologically most resistant plant material is
sporopollenin
cutin
lignin
suberin
A.
sporopollenin
Sporopollenin is biologically most resistant plant material and is present in pollen exine. It is contributed by the tapetum layer of the another wall.
Select the option that contains all plants which produce non-endospermic seeds.
Gram, Pea, Bean, Groundnut
Castor, Peanut, Orchid, Wheat
Coconut, Walnut, Wheat, Gram
Castor, Maize, Coconut, Orchid
Assertion: Black rust of wheat is a hazardous disease which is caused by Puccinia fungus.
Reason: Aflatoxin is produced in the groundnut by the infection of a bacterium.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : Storage of seeds at low temperature is possible.
Reason : Respiration and anzymatic activity of seeds are very high at low temperature.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
Assertion : Presence of pneumatophores is a special adaptation of hydrophytes.
Reason : Pneumatophores are positively geotropic shoots that have lenticels and help in gaseous exchange.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false