Tag: fruit and seed

Questions Related to fruit and seed

A substance which is used to stimulate the increase in size of the apple fruit is 

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. Morphactin

  2. Promalin

  3. Ethylene

  4. Ethapone

Show answer
Correct Option: B
Explanation:

Promalin is a mixture of cytokinin-6-benzaldenine, GA$ _{4}$ and GA$ _{7}$. It is very active in stimulating increase in apple size particularly in red delicious apples.

The ripening of fruits can be accelerated by 

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. Reducing the supply of water to plant when fruits are maturing

  2. Increasing the supply of nitrogen to the atmosphere surrounding them

  3. Warming up the surroundings artificially

  4. Artificially adding ethylene gas to the atmosphere surrounding them

Show answer
Correct Option: D
Explanation:

Ethylene is unique in that it found only in gaseous form, and accelerates ripening of fruits, leaves abscission and promotes senescence.

Berries, drupes and pomes are

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. Aggregate fruits

  2. Composite fruits

  3. Simple succulent fruits

  4. None of the above

Show answer
Correct Option: C
Explanation:

Berries, drupes and pomes develop from a single ovary of a single flower and thus are simple fruits. They also have bulk of their fruit which is fleshy and hence are called succulent.

Agrregate fruits develop from polycarpellary apocarpous ovary.
Composite fruits develops from a inflorescence of several flowers.
The correct answer is 'Simple succulent fruits'.

It will not be any advantage to produce seedless fruits in

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. Mangoes

  2. Watermelons

  3. Pomegranate

  4. Oranges

Show answer
Correct Option: C
Explanation:

Pomegranate is fruit which has leathery-skinned berry within which it contains many seeds. Each seed is surrounded by a juicy and fleshy aril. It contains hundred of edible seeds. So, it will not be any advantage to produce seedless fruit in pomegranate.

So, the correct answer C 'Pomegranate'

An aggregate fruit is the one which develops from

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. Multicarpellary apocarpous gynoecium

  2. Complete inflorescence

  3. Multicarpellary superior ovary

  4. Multicarpellary syncarpous gynoecium

Show answer
Correct Option: A
Explanation:

The aggregate fruits are formed from polycarpellary, apocarpous ovary and each ripened is called fruitlet or etaerio. The example is raspberry.

So the correct option is 'Multicarpellary apocarpous gynoecium'.

A number of fruitlets(seeds) of Strawberry are removed randomly during development of fruit.

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. Normal fruit with fewer seeds is formed

  2. Distorted fruit with under-developed portions is formed

  3. A seedless fruit is formed

  4. Fruit stops development

Show answer
Correct Option: B

Which of the following represents the edible part of the fruit of Litchi -

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. Endocarp

  2. Pericarp

  3. Juicy aril

  4. Mesocarp

Show answer
Correct Option: C
Explanation:

In Litchi, Aril is the edible part of the fruit. It is a collar like an outgrowth from the ovule base. 

So the correct option is C.

An aggregate fruit develops from an inflorescence.

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

A fruit is a seed-bearing structure in flowering plants (also known as angiosperms) formed from the ovary after flowering. An aggregate fruit results from the joining together of several ovaries of the same flower. This process starts with a flower that contains several carpels with an equal number of ovaries. As the ovaries develop and increase in size they become attached together. Aggregate fruits are also either true, without accessory parts, or accessory, with additional floral parts. 

So the given statement is false.

Pineapple $\left (ananas  \right )$ fruit develops from-

biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. a unilocular polycarpellary flower

  2. a multipistillate syncarpous flower

  3. a cluster of compactly borne flowers on a common axis

  4. a multilocular monocarpellary flower

Show answer
Correct Option: C
Explanation:
The fruit of Ananas comosus (pineapple or ananas) is sorosis, (a type of multiple fruits), developing from spike, spadix or catkin. In this type, the flowers associate by their succulent tepals, the axis bearing them grows and becomes fleshy or woody, thus, the whole inflorescence turns into a compact fruit.

So, the correct answer is 'a cluster of compactly borne flowers on a common axis'.

Match List I with List II and select the correct answer.

List-I(Fruits) List-II(Edible parts)
a. Casheut $1$. Thalamus
b. Coconut $2$. Cotyledons
c. Apple $3$. Endosperm Aril
d. Litchi
biology fruit and seed morphology of the fruit fruit plants: structure and function

  1. A-$2$, B-$3$, C-$1$ D-$4$

  2. A-$1$, B-$3$, C-$4$, D-$2$

  3. A-$2$, B-$1$, C-$3$, D-$4$

  4. A-$3$, B-$4$, C-$1$, D-$2$

Show answer
Correct Option: A