Biology · Environmental Studies

Plant Reproduction and Germination

835 Questions

Plant reproduction and germination involve seed structure, cotyledon function, and dispersal mechanisms. These core botany concepts frequently appear in general science sections. Practice these questions to ensure better retention.

Seed germination typesSeed dispersal mechanismsCotyledons and albuminous seedsCryptogamic plantsPhanerogams reproduction

Plant Reproduction and Germination Questions

Multiple choice

In botany, what is a viable seed?

  1. One which is frozen

  2. One which does not die

  3. One which is able to germinate

  4. One which has great genetic diversity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A viable seed is one that is alive and capable of germinating under the right environmental conditions.

Multiple choice

How are plants easier to conserve than animals?

  1. The huge numbers of seeds occupy too much space

  2. Captive-bred individuals cannot be replanted in the wild

  3. Captive-bred individuals cannot be replanted in the wild

  4. Can be stored in huge numbers without occupying much space
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plants produce large quantities of seeds that are small and can be stored in climate-controlled facilities, making ex situ conservation of plant species much more space-efficient than conserving animal species.

Multiple choice evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

Why is vivipary an undesirable character for annual crop plants?

  1. It reduces vigour of the plant

  2. It adversely affects the fertility of the plant

  3. The seeds exhibit long dormancy

  4. The seeds connot be stored under normal conditions for next season
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vivipary is the germination of seeds while still attached to the parent plant. In annual crops, this is undesirable because it prevents the normal dormancy period required for storage and handling, making the seeds difficult to manage for the next season.

Multiple choice bio-chemistry structure and function of cell organelles microbodies living organisms and energy production single membrane bound organelles

In germinating seeds, fatty acids are degraded exclusively in the

  1. Peroxisomes

  2. Mitochondria

  3. Proplastids

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

Glyoxysomes are specialized peroxisomes found in plants, particularly in the fat storage tissues of germinating seeds and also in filamentous fungi. As in all peroxisomes, in glyoxysomes the fatty acids are hydrolyzed to acetyl-CoA by peroxisomal-oxidation enzymes. Besides peroxisomal functions, glyoxysomes possess additionally the key enzymes of glyoxylate cycle which accomplish the glyoxylate cycle bypass. Thus, glyoxysomes contain enzymes that initiate the breakdown of fatty acids and additionally possess the enzymes to produce intermediate products for the synthesis of sugars by gluconeogenesis. The seedling uses these sugars synthesized from fats until it is mature enough to produce them by photosynthesis. Glyoxysomes also participate in photorespiration and nitrogen metabolism in root nodules.

Multiple choice

Which of these plants spread their seeds on water?

  1. Water lilies

  2. Roses

  3. Dandelions

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

Water lilies are aquatic plants that have evolved to disperse their seeds via water currents. The other plants listed use wind or animals for seed dispersal.

Multiple choice

What is an annual plant?

  1. One that lives for more than two years

  2. One that germinates, flowers, seeds, and dies every two years

  3. One that germinates, flowers, seeds, and dies in a year

  4. One that loses its leaves in winter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An annual plant completes its entire life cycle, from germination to seed production and death, within a single growing season or year.

Multiple choice botany transport in plants osmotic relations of plant cells transport across membrane imbibition and its importance

Choose the correct answers from the alternatives given.
The first process by which water enters into the seed coat when a seed is placed in a suitable situation for germination is

  1. Root pressure

  2. Absorption

  3. Osmosis

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

Imbibition is the process of absorption of water by hydrophilic solid particles. It is a special type of diffusion as the water moves along its concentration gradient. The classical example includes the absorption of water by seeds. This process plays an important role in the germination of seed, rupturing of the seed coat, and the emergence of seedlings is due to imbibition pressure developed by the seed kernel.

Hence, the correct answer is 'Imbibition'.

Multiple choice botany families of angiosperms family fabaceae eudicots family - fabaceae, sativum and solanaceae study of some important families

Seeds which are used as Jeweller's weight ______________.

  1. Xanthium

  2. Abrus precatorius

  3. Calotropis

  4. Thespasia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Abrus precatorius seeds were used as Jeweller's weight. This is because, the seeds of this plant have very consistent weight approximately 105 mg
So, the correct answer is 'Abrus precatorius'
Multiple choice botany families of angiosperms family fabaceae eudicots family - fabaceae, sativum and solanaceae study of some important families

Oil seed is

  1. <p>Lens culinaris</p>

  2. <p>Arachis hypogea</p>

  3. <p>Trifolium alexandrium</p>

  4. <p>Phaseolus mungo</p>
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Peanut or groundnut, taxonomically classified as Arachis hypogaea is a legume crop grown mainly for its edible seed and oil present in the seed. It is widely grown in tropics and subtropics, is important to both small and large commercial producers. It is classified both as a grain legume and as an oil crop. Peanut oil is used in cooking. So, the correct answer is 'Arachis hypogaea'.

Multiple choice botany families of angiosperms family fabaceae eudicots family - fabaceae, sativum and solanaceae study of some important families

Oil found in groundnut accumulates in

  1. Embryo

  2. Cotyledons

  3. Endosperm

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Arachis hypogaea, commonly known as groundnut or peanut is a legume crop which is grown mainly for its edible seeds and oil present in the seeds i.e in cotyledons. It belongs to family Fabaceae. In groundnut, the cotyledons are the source of food and oil. Peanut oil is often used in cooking. Due to its monounsaturated content, it is considered more healthful than saturated oils and it is resistant to rancidity. So, the correct answer is 'Cotyledons'.