Biology · 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 morphology of angiosperms introduction to angiosperms morphology of flowering plants plant kingdom biology

How many of the following characters are suitable to pea plant in the vegetative stage

1. Superior ovary
2. Marginal placentation
3. Gamosepalous condition
4. Papilionaceous corolla
5. Zygomorphic flowers
6. Non-endospermic seeds
7. Stipulate leaves
8. Pinnate compound leaves
9. Root Nodules
10. Foliaceous stipules

  1. 10

  2. 6

  3. 7

  4. 4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

All of the above characters are seen in the pea plant in the vegetative stage 


1) It has a superior ovary because the ovary is attached to the receptacle above the attachment of other floral parts. 

2) It is said to have marginal placentation because the ovary in which the placenta forms a ridge along the ventral suture of the ovary and the ovules develop on two separate rows.
3) It is gamosepalous because the sepals are partly or completely united
4) It is papilionaceous corolla it has a corolla with usually five petals that include a large upper petal enclosing two lateral wings and a lower carina of two united petals.
5) It has zygomorphic flowers because the flower is bilaterally symmetrical 
6) It is said to have Non-endospermic seeds as because endosperm is absent in the pea seeds
7) It has stipulate leaves because of the presence of stipules near the node of leaves.
8)It has pinnately compound leaves because a row of leaflets forms on either side of an extension of the petiole called the rachis.
9) It has Root nodules because of the symbiotic relationship between nitrogen-fixing bacteria which forms nodules on roots.
10)it has foliaceous stipules because the stipules are green and expanded like leaves.
So, the correct option is A.

Multiple choice morphology of angiosperms introduction to angiosperms morphology of flowering plants plant kingdom biology

Stamens of Jowar$/$ Grass are

  1. Dorsifixed

  2. Versatile

  3. Basifixed

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

Stamens of Jowar/Grass are versatile. It implies that their filaments are attached to anther at a point on the connective. Due to this, the anthers can swing freely. This type of arrangement is useful because grasses use wind as the pollinating agent. Freely swinging anthers can dehisce and release the pollen grains in the wind, they can be carried to the suitable stigma.

Hence, the correct answer is 'Versatile'

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

The branched tree-like structure/tree of life present in the cerebellum is

  1. Arbor vitae

  2. Arborial

  3. Archenteron

  4. Areole
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cerebellum is the region of the hind brain. The cortex of cerebellum is made up of grey matter which is external to the white matter. The white matter projects outside and forms a branching pattern of a tree, which is called the Arbor Vitae or the tree of life. It is required for the coordination of various movements of the body. It also allows the cerebellum to communicate with the parts of the brain. 

Hence, the correct answer is 'Arbor vitae'

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

Arbor vitae is

  1. Tree-like structure in cerebrum

  2. Tree of life in cerebellum

  3. End part of spinal cord

  4. Branched dendrites of a neuron
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Arbor vitae, meaning 'tree of life', refers to the branching white matter pattern seen in a cross-section of the cerebellum. It is named for its resemblance to a tree.

Multiple choice biology structure and functions of living organisms -ii dental care, eye care and hair care dental care and dental diseases salivary glands

Variation in length of the filament of stamen can be seen in.

  1. Salvia

  2. Mustard

  3. Chinarose
  4. Both $(1)$ and $(2)$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Salvia (sage) is well-known for its specialized pollination mechanism involving a lever system in the stamen, where the filaments vary in length to facilitate pollen transfer by insects.

Multiple choice biology water absorption and ascent of sap in plants transport of water across plants habit of plants plant classifications

The meristem that is parallel to the longitudinal axis of the plant is ____________.

  1. Procambium

  2. Intercalary meristem

  3. Phellogen

  4. Apical meristem
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A. Procambium is a plant tissue that came from the apical meristem which made the vascular bundles i.e, the xylem and the phloem.

B. Intercalary meristems are residual apical meristems that exist at the nodes and internodes which increases the length of the plant.

C. Phellogen is also famous as cork cambium which is a lateral meristem. It increases the girth of the plant.

D. The apical meristem is placed at the root and shoots tip. It helps in the primary growth of a planet by increasing the length of the plant.

The lateral meristem which occurs on the lateral side of the longitudinal axis stem. It is parallel to the longitudinal axis and also responsible for increasing the girth of a plant (secondary growth).

So, the correct answer is 'Phellogen'.

The correct option is C.

Multiple choice biology water absorption and ascent of sap in plants transport of water across plants habit of plants plant classifications

Study the following lists

List-I List-II
(A) Coleorha (I) Development of sporophedirely from gametophewithout intervention ofgametes
(B) Apogamy (II) Development of gametophedirectly om sporophewithout the involvement ofreduction division
(C) Indusium (III) An unbranched columnsstem with a crown of leaves
(D) Caudex (IV) Protedive covering of radical
(V) Protective structure of a sorus

The correct is match:

  1. A B C D

    V II IV I

  2. IV I V III

  3. III V II IV

  4. II III I V
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Coleorhiza is the protective covering of the radicle (IV), Apogamy is development without gametes (I), Indusium is the protective structure of a sorus (V), and Caudex is an unbranched stem (III). This matches IV, I, V, III.

Multiple choice biology water absorption and ascent of sap in plants transport of water across plants habit of plants plant classifications

Papaya is a dioecious plant. This condition prevents.

  1. Both autogamy and geitenogamy

  2. Only autogamy

  3. Only xenogamy

  4. Geitonogamy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dioecious plants have male and female flowers on separate individuals. This physical separation prevents both autogamy (self-pollination within the same flower) and geitonogamy (pollination between flowers on the same plant).

Multiple choice botany root - external morphology root system in plants modifications of root root modifications

A partial (stem or root) parasitic plant is one which

  1. Draws food from host only at certain times

  2. Takes both water and nutrients from host plant

  3. Takes only water from host plant

  4. Uses the host just for support
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Partial parasitic plants have chlorophyll which helps them to produce organic substances they require. They depend on the host for water and minerals, sometimes few chemical substances required for their growth. So, the correct option is B. ( Takes both water and nutrients from host plant )