Tag: germination

Quizzes (1) Questions (69)

Questions Related to germination

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

In vivipary type of seed germination, the seeds undergo _________________.

  1. Twelve months of resting period

  2. Six months of resting period

  3. Three months of resting period

  4. No resting period
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In viviparous seed germination, seeds germinate directly on the parent plant without entering a dormant or resting period, allowing immediate establishment upon dropping.

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

In germinating oil seeds $\beta$-oxidation of free fatty acids takes place in ______________.

  1. Oleosoines

  2. Glyoxysomes

  3. Mitochondria

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

During the germination of oil seeds, the beta-oxidation of fatty acids occurs inside specialized microbodies called glyoxysomes. These organelles contain the enzymes of the glyoxylate cycle, converting fatty acids into carbohydrates to support growth.

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

In nature, the orchid seeds germinate only in association with _______________.

  1. Myxomycetes

  2. Mycorrhiza

  3. Blue green algae

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

Orchid seeds lack stored food reserves and depend entirely on a symbiotic relationship with mycorrhizal fungi to provide nutrients for germination in nature. Without this fungal association, natural germination does not occur.

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

During germination of barley grain, the enzyme a-amylase is secreted by ______________.

  1. Seed coat

  2. Aleuronic layer

  3. Coleorhizae

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

In cereal grains like barley, the aleurone layer synthesizes and secretes hydrolytic enzymes such as alpha-amylase upon stimulation by gibberellic acid during germination. These enzymes break down starchy endosperm reserves into sugars for the embryo.

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

In maize(Zea mays) fertilization takes place between a female parent having colourless endosperm and the male parent having yellow endosperm. After fertilization, the endosperm of the new seed becomes yellow. This phenomenon is known as ___________.

  1. Dominance

  2. Xenia

  3. Met xenia

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

Xenia refers to the effect of pollen on the maternal tissues or endosperm of the seed, causing the immediate phenotypic expression of paternal traits. In this case, the yellow endosperm trait from the male parent is expressed in the hybrid seed's endosperm.

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

In which one of the following pathogens do the cells of promycelium after the germination of teleutospore produced infection hyphae instead of basidiospores?

  1. Ustilago scitaminae

  2. Tilletia foetida

  3. Tilletia tritici

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

In Ustilago scitaminae, the promycelium typically produces infection hyphae directly rather than forming basidiospores, which is a characteristic feature of this smut fungus.