Advertisements
Advertisements
Question
A non biology person is quite shocked to know that apple is a false fruit, mango is a true fruit and banana is a seedless fruit. As a biology student how would you satisfy this person?
Advertisements
Solution
Fruits that are mature ovaries of flowers are called “true fruits”, and fruits that develop from other floral parts of plants are called “false fruits”. For example, in an apple, the thalamus produces the fleshy edible part; thus, an apple is a false fruit. Mango, on the other hand, develops from the ovary of the flower; thus, it is a true fruit.
Fruits that develop without fertilisation are called parthenocarpic fruits. Since no fertilisation takes place, such fruits are seedless. Banana is an example of a seedless fruit.
RELATED QUESTIONS
Some organisms suspend their metabolic activities to survive in unfavourable conditions. Explain with the help of any four examples.
Describe the development of endosperm after double fertilisation in an angiosperm.
Draw a labelled mature stage of a dicotyledonous embryo.
Why does endosperm development preceeds that of zygote ?
Describe the development of an endosperm in a viable seed. Why does endosperm development precedes embryo development?
Why does endosperm development precede embryo development in angiosperm seeds?
______ is the first cell of female gametophytic generation in angiosperms.
Which of the following triggers an acrosomal reaction of the sperm?
At what stage of endosperm development, will you observe nuclear or cellular type of endosperm?
Ex-albuminous seeds differ from albuminous seeds in ____________.
In angiosperms, triple fusion is required for the formation of ______.
The endosperm of gymnosperms is ______.
If the endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in the root tip cells will be ______.
The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes?
Mark the odd one.
Which of the following statements are true related to Seed X and Y?
 |
 |
| SEED X | SEED Y |
- Seed X is dicot and endospermic or albuminous.
- Seed X is dicot and non-endospermic or non-albuminous.
- Seed Y is a monocot and endospermic or albuminous.
- Seed Y is a monocot and non-endospermic or non-albuminous.
Choose the correct option with the respect to the nature of the seed.
The type of evolution where the central part is occupied by free nuclear and the peripheral part by cells is observed in ______.
The diagram given below shows the three types of endosperms in angiosperms.
 |
 |
 |
| Type 1 | Type 2 | Type 3 |
- Identify the three types of endosperms shown above.
- Name the type of endosperm which commonly occurs in polypetalous dicots.
In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are ______.
