Biology · Environmental Studies

Plant Reproduction and Germination

892 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

Match the plants with their seed storage proteins.

 
Plant Protein
P. Rape seed 1. Kafirin
Q. Pea 2. Vicillin
R. Sorghum 3. Gliadin
S. Wheat 4. Napin
5. Zein
6. Patatin

  1. P - 4, Q - 3, R - 5, S - 2

  2. P - 2, Q - 3, R - 6, S - 1

  3. P - 4, Q - 2, R - 1, S - 3

  4. P - 3, Q - 2, R - 4, S - 5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rape seed contains napin (4), Pea contains vicilin (2), Sorghum contains kafirin (1), and Wheat contains gliadin (3). Matching these correctly gives option C.

Multiple choice biology respiration in living organisms breathing in plants mode of respiration in plants process of respiration

If you dip a sack full of paddy seeds in water over night and then keep it out for a couple of days, it feels warm. What generates this heat?

  1. Imbibition

  2. Exothermic reaction between water and seed coats

  3. Friction among seeds due to swelling

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

Seeds are living organisms that continue to respire even when dormant. Respiration is an exothermic process that releases energy in the form of heat, which causes the temperature increase observed in the sack.

Multiple choice evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

Germination of the seed is promoted by.

  1. Green light

  2. Red light

  3. Blue light

  4. Infra red light
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Seed germination in many photoblastic seeds is promoted by red light, which is absorbed by the active form of phytochrome, Pfr. Far-red light typically inhibits or reverses this germination process.

Multiple choice evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

Renu soaked some moong seeds overnight in water. Next day, after draining out the water, she wrapped the seeds in a wet cloth. After a day, she observed small white structures growing out of the seeds. These small white structures will develop into

  1. Stems

  2. Roots

  3. Leaves

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

Sprouts develop in the pulses or grain under humid environment with adequate amount of water fasten the process of germination and Roots comes out.

So the correct option is 'Roots'.

Multiple choice evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

Which of the following is a step which is involved in seed germination?

  1. Absorption of Water

  2. Absorption of Carbon Dioxide

  3. Absorption of Light

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

Germination is the process of seeds developing into new plants. First, environmental conditions must trigger the seed to grow.

  1.  When water is plentiful, the seed fills with water in a process called imbibition. The water activates special proteins, called enzymes, that begin the process of seed growth. 
  2.  The seed grows a root to access water underground. 
  3. The shoot appears above ground. 

The seed sends a shoot towards the surface, where it will grow leaves to make food that provides energy. 
The leaves continue to grow towards the light source in a process called photomorphogenesis.
So the correct option is 'Absorption of Water'

Multiple choice evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

In germinating oil seeds beta-oxidation of free fatty acids takes place in the _____________.

  1. Oleosomes

  2. Glyoxysomes

  3. Mitochondria

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

In germinating oil seeds, stored lipids are converted into carbohydrates via the glyoxylate cycle. This pathway specifically takes place inside specialized microbodies known as glyoxysomes.

Multiple choice evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

State whether the following statements are true or false.
Oxygen is not necessary for seed germination;

  1. True

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

Aerobic respiration is respiration which occurs in the presence of oxygen. Aeration is the main phenomenon which helps in the germination of seed. Oxygen is absorbed by the cells which later gets transformed into energy for future uses. For better germination of seeds require oxygen, water, sunlight, and temperature.

So, the correct statement is 'True'.

Multiple choice evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

Choose the correct answer from the alternatives given.
Seed germination is over when the:

  1. embryo sporophyte absorbs water

  2. embryo sporophyte resumes growth

  3. primary root pokes out of the seed coat

  4. cotyledons unfurl
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In summary, seed germination is the process of a fertilized plant ovary, or seed, developing into a mature plant. Seed germination starts with imbibition when the seed takes in water from the soil. This triggers root growth to allow the seed to get more water.

So, the correct option is 'primary root pokes out of the seed coat'.

Multiple choice evs developmental journey of seed seed to plants germination of seeds life within the seed

Which of the following is the correct sequence of events happening during germination of a seed
1. The hypocotyl of the germinating seed elongates and pushes the cotyledon above ground
2. Seed absorbs water by wicking moisture through the seed coat into the seed
3.The exterior of the seed cracks open
4. The radicle emerges from the seed and forms into the root

  1. 1-3-4-2

  2. 1-2-4-3

  3. 2-3-4-1

  4. 2-3-1-4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Initially, the seed absorbs water by wicking moisture through the seed coat into the seed itself. 
  • Moisture essentially brings the seed back to life. 
  • Once enough moisture has been absorbed by the seed, the exterior of the seed cracks open. 
  • At this point, the radicle emerges from the seed and forms into the root.
  • The hypocotyl, or stem of the germinating seed, elongates and pushes the the cotyledon above ground.
  • So the correct answer is' 2-3-4-1'
Multiple choice self pollination asexual and sexual reproduction in plants botany

Repeated self pollination over the generations produces.

  1. New varieties

  2. Elimination of weak traits

  3. Better progeny

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

Repeated self-pollination leads to inbreeding depression, where the accumulation of homozygous recessive deleterious alleles results in reduced fitness and vigor. This process is commonly used in breeding to create pure lines, but it often manifests as weak progeny.

Multiple choice botany plants: structure and function significance of fruits fruit reproductive morphology

Essential requirement for seed germination is

  1. $H _{2}O$, $O _{2}$
  2. $O _{2}$ and light
  3. $H _{2}O$ and high temperature

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

Seeds have three requirements for germination. These are water (during absorption and subsequent stages of growth), oxygen (for respiration) and temperatures (for metabolism and growth). In addition, light may or may not be necessary for germination.
Therefore, the correct answer is option A.

Multiple choice factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

The rate of respiration of young maturing seeds is quite high but as water contents decreases during further maturation respiration

  1. Remains high

  2. Stop complete

  3. Increase steadily

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

The rate of respiration of young maturing seeds is quite high which has amount of water as the limiting factor during maturation. Water helps in the acceleration of enzyme activity. When the amount of water is less, the rate of maturation decreases.

Multiple choice factors affecting respiration living organisms and energy production life processes in living organisms- part 1 respiration biology

If the naked pea seeds are kept in four respiratory flasks, they would germinate best in the flask which contains

  1. Carbon dioxide

  2. Oxygen

  3. Hydrogen

  4. Nitrogen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Germination is a process of sprouting of seeds which later develops into a new plant. There are several factors which play vital role in the germination process. Theses are water, temperature, oxygen and light. During the process of germination, initially, the seed absorbs water. Later, the swollen seed respires that requires oxygen. Hence, when naked pea seeds are kept in a flask containing oxygen, it shows the best germination. 
Thus, the correct answer is option B.