Tag: germination

Quizzes (1) Questions (69)

Questions Related to germination

Multiple choice biology the flower pollination and its types germination sexual reproduction in plants seed germination seeds - structure and germination

Root system grows from

  1. Embryo of seed

  2. Radicle of embryo

  3. Plumule of embryo

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

Roots system develops from the radicle of the embryo because in seed, the radicle grows downward into the soil to absorb water and nutrients from the soil.

So, the correct option is 'Radicle of embryo'.

Multiple choice biology the flower pollination and its types germination sexual reproduction in plants

............. is not unisexual flower.

  1. Coconnut

  2. Papaya

  3. Gulmohar

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

The flowers wherein both the sex-organs, that is, the stamen and the pistil are present is called the bisexual or the hermaphroditic flowers. Those flowers wherein, only one of the sex-organ is present and the other is rudimentary absent, are called uni-sexual flowers. These can be pistillate when only pistil is present and can be staminate when only stamen is present.

Gulmohar is not unisexual. It is a bisexual flower.
So, the correct answer is 'Gulmohar'

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

Seeds are the basis of out agriculture and offer several advantages to angiosperms. Find the odd statement among the following.

  1. Seeds have better adaptive strategies for dispersal

  2. Seeds may have wings for their dispersal

  3. Seeds have sufficient food reserves to nourish immature haploid embryo on germination

  4. Seeds may remain alive for long
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology seeds - structure and germination germination seed germination the flower

True or False:
Plants need an optimum temperature of $5^o - 15^o C$ for germination.

  1. True

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

Seed germination can occur across a wide range of temperatures depending on the plant species, and many plants germinate well outside a strict 5 to 15 degree Celsius range, making the blanket statement false.

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

In some plants, particularly halophytes, the seeds germinate with fruits while still attached to the parent plant. Identify this phenomenon from the following terms.

  1. Sesimonasty

  2. Vivipary

  3. Monocarpic

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

Vivipary is the phenomenon of germination of seeds inside the fruit while it is still attached to the parent tree. Such adaptation is found in halophytes. Viviparous plants produce seeds that germinate before they detach from the parent. In many mangroves, for instance, the seedling germinates and grows under its own energy while still attached to its parent.

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

Coleoptile in a grass seedling, is the covering over

  1. Scutellum

  2. Radicle

  3. Plumule

  4. Emerging leaf
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Coleoptile is the pointed protective sheath covering the emerging shoot in monocotyledons such as grasses. Coleoptiles have two vascular bundles, one on either side. Coleoptiles consist of very similar cells that are all specialised to fast stretch growth. They do not divide, but increase in size as they accumulate more water. Coleoptiles also have water vessels along the axis to provide a water supply. 
Thus, the correct answer is option C.

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

Vivipary is shown by .............

  1. Cocos

  2. Squash

  3. Rhizopora

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

Vivipary has two different meanings. In animals, it means development of the embryo inside the body of the mother, eventually leading to live birth, as opposed to laying eggs. In plants, it means reproduction via embryos, such as buds, that develop from the outset without interruption, as opposed to germinating externally from a seed. Examples: Cocos, Squash, Rhizophora. It is because all these seeds have high moisture content.