In a recalcitrant seed, which physiological factor is PRIMARILY responsible for its inability to withstand desiccation?
Presence of germination inhibitors that prevent metabolic slowdown
Lack of protective proteins that stabilize cellular components during drying
High sensitivity of cellular membranes to dehydration damage
Rapid depletion of stored reserves during the early stages of desiccation
Related Questions
A seed which contains only one cotyledon is called:
Dicotyledonous
Monocotyledonous
Polycotyledonous
Acotyledonous
A seed's protective outer covering is called the:
Endosperm
Testa
Seed coat
Pericarp
The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons?
Cotyledon
Endosperm
Aleurone layer
Plumule
The micropyle of a seed allows for the passage of which crucial element for germination?
Oxygen
Carbon dioxide
Nutrients
Water
Which one of the following is an endospermic seeds?
Pea
Bean
Gram
Castor
Which of these combinations correctly matches the seed type with its corresponding post-fertilization structure?
Monocot seed - Fruit with one cotyledon and endosperm; Dicot seed - Fruit with two cotyledons and reduced/no endosperm
Monocot seed - Fruit with two cotyledons and no endosperm; Dicot seed - Fruit with one cotyledon and endosperm
Monocot seed - Fruit with one cotyledon and no endosperm; Dicot seed - Fruit with two cotyledons and endosperm
Monocot seed - Fruit with two cotyledons and endosperm; Dicot seed - Fruit with one cotyledon and no endosperm
I. In dicotyledonous seeds, cotyledons are often fleshy and full of reserve food II. Generally, monocotyledonous seeds are endospermic III. Generally, dicotyledonous seeds are non-endospermic IV. Most of the monocotyledonous seeds have fleshy cotyledons. Select the correct statements
All except I
All except II
All except III
All except IV
Parachute mechanism of seed dispersal occurs in
Sunflower
Antirrhinum
Mango
Apple
Caryopsis is found in
Sunflower
Maize
Pea
Datura
Seeds posses spongy aril in
Eichhornia
Potamogeton
Sagittaria
Nymphaea
