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 biology seeds - structure and germination germination seed germination the flower

Which one of the following statements is not correct regarding vivipary?

  1. Seeds germinate within the fruit while still attached to the mother plant

  2. It usually occurs under highly saline conditions

  3. It occurs in the mangrove plants

  4. It involves a dormancy period for the seed
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vivipary involves the seed germinating immediately while attached to the parent, thereby bypassing the typical dormancy period that other seeds undergo.

Multiple choice biology seeds - structure and germination germination seed germination the flower

Identify the correct sequence of stages of germination in pea plant.

  1. Bursting of the seed coat, radicle comes out, coleoptile pushed upward, primary root and leaf foliage developed.

  2. Bursting of the seed coat, radicle comes out, plumule pushed upward, primary root developed.

  3. Bursting of the seed coat, radicle comes out, primary root developed, hypocotyl comes out of the soil.

  4. Bursting of the seed coat, coleoptile pushed upward, radicle comes out, primary root and leaf foliage developed.
Reveal answer Fill a bubble to check yourself
B 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.
  2. The water activates special proteins, called enzymes, that begin the process of seed growth. 
  3. The seed grows a root to access water underground. 
  4. The shoot appears above ground. 
  5. The seed sends a shoot towards the surface, where it will grow leaves to make food that provides energy. 
  6. The leaves continue to grow towards the light source in a process called photomorphogenesis.
So the correct option is 'Bursting of the seed coat, radicle comes out, plumule pushed upward, primary root developed.'
Multiple choice biology seeds - structure and germination germination seed germination the flower

Mark the correct match.

  1. Epigeal germination- Bean

  2. Hypogeal germination- Maize

  3. Bisexual flower- Mustard

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

In beans germination takes place above the ground and maize below the ground, bisexual flowers were seen in mustard.

So the correct option is 'All of the above.'

Multiple choice biology seeds - structure and germination germination seed germination the flower

Monocot seed generally shows

  1. Epigeal germination

  2. Hypogeal germination

  3. Both A and B

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

In hypogeal germination, the cotyledons do not come out of the soil surface. In such seeds, the epicotyl (i.e., part of the embryonic axis between plumule and cotyledons) elongates pushing the plumule out of the soil. All monocotyledons show hypogeal germination.

So the correct option is 'Hypogeal germination'.

Multiple choice botany diversity in living things and their classification diversity in plants types of nutrition in plants different modes of nutrition in plants

Why vivipary is an undesirable character for annual crop plants?

  1. It reduces is vigour of the plant

  2. It adversely affects the fertility of the plant

  3. The seeds exhibit long dormancy

  4. The seeds cannot be stored under normal conditions for next season
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vivipary is a condition where seeds germinate on the plant. Most of the food crops are annuals and seeds are consumed as food. Therefore, if seeds germinate on the plant they cannot be utilized as food nor can they be stored for the next season. So, the correct answer is 'The seeds cannot be stored under normal conditions for next season'