Tag: morphology of the fruit

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Questions Related to morphology of the fruit

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

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

  1. Morphactin

  2. Promalin

  3. Ethylene

  4. Ethapone
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

The ripening of fruits can be accelerated by 

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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

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

Berries, drupes and pomes are

  1. Aggregate fruits

  2. Composite fruits

  3. Simple succulent fruits

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

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

It will not be any advantage to produce seedless fruits in

  1. Mangoes

  2. Watermelons

  3. Pomegranate

  4. Oranges
Reveal answer Fill a bubble to check yourself
C Correct answer
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'

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

An aggregate fruit is the one which develops from

  1. Multicarpellary apocarpous gynoecium

  2. Complete inflorescence

  3. Multicarpellary superior ovary

  4. Multicarpellary syncarpous gynoecium
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

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

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

  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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In strawberries, the fruit is an aggregate accessory fruit. The development of the fleshy receptacle depends on the presence of the achenes (seeds); removing them leads to distorted growth in those specific areas.

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

An aggregate fruit develops from an inflorescence.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

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

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.