Tag: germination

Quizzes (1) Questions (69)

Questions Related to germination

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

Oldest known crop of the world is of

  1. Wheat

  2. Rice

  3. Barley

  4. Both (A) and (C)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The first domesticated crops include eight plant species with three cereals, four pulses and flax. These are namely Triticum dicoccum, T. monococcum, Hordeum vulgare, lentils, pea, chick pea and bitter vetch. Thus, out of the given options, barley and wheat the one of the oldest cultivated crop of world. 
Thus, the correct answer is option D.

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

At the time of germination, cotyledon and endosperm do not come out of the soil. This type of germination is called as

  1. Hypogeal germination

  2. Epigeal Germination

  3. Monoecious germination

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

The germination process which takes place below the ground and the cotyledon and endosperm do not come out of the soil is called as Hypogeal germination.

So the correct option is 'Hypogeal germination.'

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

Germination in which cotyledons come above the surface of soil is known as 

  1. Epigeal

  2. Hypogeal

  3. Parthenocarpic

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

In many dicotyledons like beans, castor, and some monocotyledons, the cotyledon is pushed above the soil by rapid elongation of the hypocotyl and they function as photosynthetic organs till the establishment of the seedling. This kind of germination is known as epigeal germination. 

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

Mangrove plants show vivipary. This is

  1. Germination of seeds with in fruits while still attached to parent plant

  2. Germination of seeds in fruits on the soil

  3. Germination of seeds within fruit on sterile artificial culture medium

  4. Germination of seeds only after dispersal of fruits
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The mangroves grow as a group of shrubs along the tidal coasts of mudflats, with specially evolved viviparous (bringing forth live young)  seed development just like mammals. In mangroves, Abscisic acid(ABA) a plant hormone plays a significant role in viviparous germination of seeds. 

The plant hormone leads to transduction followed by the MAPK signaling pathway. 
Vivipary is a condition whereby the embryo(the young plant within the seed) grows first to break through the seed coat out of the fruit while still attached to the parent plant.

 So, the correct answer is 'Germination of seeds within fruits while still attached to the parent plant'

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

Vivipary occurs in

  1. Mangrove plants

  2. <p>Alpine plants / Orchiods</p>

  3. Tropical plants / Sea Weeds

  4. <p>Desert plants / Vallisneria</p>
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vivipary is the condition whereby the embryo (the young plant within the seed) grows first to break through the seed coat then out of the fruit wall while still attached to the parent plant. This condition is found in Bruguiera, Ceriops, Kandelia and Rhizophora species (Mangrove plants). So, the correct answer is 'Mangrove plant'.

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

Vivipary is

  1. Seed germination with subterranean cotyledons.

  2. Seed germination with epiterranenan cotyledons.

  3. Fruit development without pollination.

  4. Seed germination inside the fruit while attached to the plant.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vivipary is the phenomenon where the seed germinates while still attached to the parent plant, which is a common adaptation in mangrove species.

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

The character found only in halophytes is

  1. Vivipary

  2. Vekamen

  3. Heterophylly

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

Vivipary is the special type of seed germination. During germination, seed is till attached to parent plant and nourished by it. It generally occurs in mangrove plant. The mangrove plants are generally medium sized tree which grow in salty marshes of sea coasts. (eg. Rhizophora, Sonneratia, Avicennia). The seeds of mangrove plants cannot germinate on the marshy habitat because of the excessive salt concentration and lack of oxygen. So, the correct answer is ‘Vivipary’.