Biology ยท Science General

Botany and Plant Science

4,989 Questions

Botany and plant science delve into the biological study of plant life, covering structural anatomy, physiological processes, and reproductive mechanisms. Key topics include inflorescence patterns, root modifications, and seed development, which are vital for biology sections in medical entrance exams. This collection of practice questions helps solidify understanding of complex plant functions.

Plant ReproductionPlant AnatomyRoot ModificationsInflorescence PatternsPlant Morphology

Botany and Plant Science Questions

Multiple choice

Which of the following is a zygomorphic flower?

  1. Tulip

  2. Poppy

  3. Daffodil

  4. Mustard

  5. Tulsi
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

If a flower has only one line of symmetry, i.e. there is only one way to divide it to get two equal halves, it is called zygomorphic flower. For example, sweet pea, beans, tulsi, etc.

Multiple choice

Which of the following plants show(s) cymose inflorescence?

  1. Sweet pea

  2. Mustard

  3. Coriander

  4. Jasmine

  5. Both sweet pea and mustard
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Jasmine plant shows cymose inflorescence in which the tip of the main axis ends in a single flower and the subsequent flowers arise on the lower branches.

Multiple choice

Which of the following is true about spadix inflorescence?

  1. Outer pedicels are progressively longer than the inner ones.

  2. Stalk has densely arranged flowers.

  3. Sessile flowers are arranged along the axis.

  4. Small spikes have one or more flowers.

  5. Flowers are crowded on a compound receptacle.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In spadix inflorescence, stalk has densely arranged flowers around the stalk, which are enclosed or accompanied by a spathe.

Multiple choice

Which of the following correctly defines an actinomorphic flower?

  1. A flower that can be cut into two equal halves by any plane.

  2. A flower that can be divided into two equal halves only by one plane.

  3. A flower that cannot be divided into two equal halves.

  4. A flower that have many tiny florets.

  5. A flower that can only be divided laterally into two equal halves.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When a flower can be cut into two equal halves by any vertical section passing through the centre, it is called actinomorphic flower.

Multiple choice

_________ is not true about a mustard plant.

  1. Bicarpellary

  2. Gamosepalous

  3. Hypogynous flowers

  4. Racemose inflorescence

  5. Actinomorphic flower
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sepals of a mustard flower are free from each other. Hence, they are called polysepalous.

Multiple choice

Which of the following plants shows epigyny?

  1. Citrus

  2. Rose

  3. Mustard

  4. Cucumber

  5. China rose
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

If ovary is present below the level of attachment of three whorls, it is called inferior ovary and the condition is called epigyny and it is shown by cucumber and sunflower.