Biology ยท Science General

Botany and Plant Science

5,038 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
  1. Smilax

  2. Ranunculus

  3. Calophyllum

  4. Dioscorea

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

While parallel venation is a characteristic of monocots, Smilax is a notable exception among dicots that exhibits parallel venation.

Multiple choice
  1. stipule

  2. leaf base

  3. lamina

  4. leaf apex

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

In Nepenthes (pitcher plant), the pitcher is a modification of the leaf lamina, while the lid is formed by the leaf apex and the tendril by the midrib.

Multiple choice
  1. positively geotropic

  2. negatively geotropic

  3. positively heliotropic

  4. negatively hydrotropic

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

Prop roots grow downwards from branches into the soil to provide structural support. Because they grow in the direction of gravity, they are positively geotropic.

Multiple choice
  1. type of ovary in a plant

  2. mode of arrangement of leaves on the stem

  3. type of roots

  4. arrangement of sepals and petals in a flower

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

Phyllotaxy refers to the pattern or mode of arrangement of leaves on the stem or branch, such as alternate, opposite, or whorled.

Multiple choice
  1. root cap

  2. region of cell elongation

  3. meristematic zone

  4. region of maturation

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

Root hairs are unicellular extensions of the epidermal cells found specifically in the region of maturation, where they are responsible for water and mineral absorption.

Multiple choice
  1. hypanthodium

  2. spadix

  3. polychasial cyme

  4. capitulum

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

The capitulum (or head) inflorescence is considered the most highly evolved because it condenses many small flowers into a single structure that mimics a single flower, optimizing pollination efficiency.

Multiple choice
  1. plant

  2. seed

  3. fruit

  4. flower

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

After fertilization, the ovary of the flower matures into a fruit, while the ovules inside the ovary develop into seeds.

Multiple choice
  1. Compositae

  2. Euphorbiaceae

  3. Cruciferae

  4. Solanaceae

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

Cyathium inflorescence is characteristic of family Euphorbiaceae.The flower-like characteristics of the cyathia are underlined by brightly coloured nectar glands and often by petal-like appendages to the nectar glands, or brightly coloured, petal-like bracts positioned under the cyathia.

Multiple choice
  1. pollen tube

  2. water

  3. male gamete

  4. none of these

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

Micropyle in seed helps the entry of water during germination.The entry of water activates the embryo cells.

Multiple choice
  1. Leguminosae

  2. Cucurbitaceae

  3. Malvaceae

  4. Cruciferae

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

Marginal placentation is found in most of the members of the family Leguminosae.he ovary in which the placenta forms a ridge along the ventral suture of the ovary and the ovules develop on two separate rows is known to have marginal placentation.

Multiple choice
  1. root

  2. stem

  3. rhizome

  4. foliage leaf

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

A carrot is a modified taproot that stores food, classifying it as a root tuber.