Tag: plants: structure and function

Quizzes (27) Questions (150)

Questions Related to plants: structure and function

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

Juicy hair-like structures observed in the lemon fruit develop from : -

  1. Exocarp

  2. Mesocarp

  3. Endocarp

  4. Mesocarp and endocarp
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Endocarp in citrus is divided into segments, containing juicy hair like vesicles filled with the juice of the fruit.The epicarp or Flavedo is the outer most covering also called the rind, it contains oil glands. The mesocarp is fused with the epicarp, and is fibrous in nature it also forms the central column of the fruit and is also the called the pith/albedo.   

So, the correct answer is 'Endocarp.'

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

Fruit shape in shephered's purse(Capsella bursa) is of two types-triangular and top-shaped. Triangular fruit shape(T) is dominant over top-shape (t). Following table summarises the results of several crosses.

Cross Result
Strain 1 x tt All triangular
Strain 2 x tt 1 triangular : 1 top-shaped
Strain 3 x tt All top-shaped
Strain 4 x tt 3 triangular: 1 top-shaped

Which pair of strains possess the genotype Tt?

  1. Strains 2 and 3

  2. Strains 2 and 4

  3. Strains 1 and 3

  4. Strains 1 and 4
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology fruit and seed morphology of the fruit fruit plants: structure and function

Nut fruit has

  1. Hard pericarp

  2. Soft pericarp

  3. No pericarp

  4. Pericarp fused with thalamus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pericarp is a tissue that develops around the seeds. These are made up of three layers the epicarp, mesocarp and endocarp. In nuts, the pericarp is a hard indehiscent layer surrounding the seed. Nuts usually have stony pericarp which is hard in nature.