Tag: the flower

Quizzes (10) Questions (133)

Questions Related to the flower

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

Flowers are unisexual in.

  1. Cyathium

  2. Thyrsus

  3. Verticillaster

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

  • A unisexual flower is a flower that possesses either stamens or carpels. Cyathium looks like a single flower. 
  • It has a cup-shaped involucre formed by bracts encloses a single female flower and a number of male flowers.  
  • Thus it has unisexual flowers with each male flower are as a single stamen while a single pistil represents a female flower. 
  • Also, it is a type of cymose inflorescence. Other options are not as unisexual.
  • The correct option is A.

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

The number of whorls present in a bisexual flower is

  1. One

  2. Three

  3. Two

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

A bisexual flower is a flower that contains all the four whorls such as petals, sepals, the male reproductive structure (stamen) and female reproductive structure (pistil). Hence it is also called as a complete or perfect flower. Thus the correct answer is 'Four'.

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

The flowers are composed of 

  1. Petals, sepals, filament and carpel

  2. Sepals, petals, stamen and pistil

  3. Sepals, petals, anther and pistil

  4. Petals, sepals, ovary and anther
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The whorl of the flower are differentiated into two categories essential and non-essential whorl and are consists of 

  1. Calyx which is considered as the outermost whorl and its unit is known as sepals and are green in colour helps in protection of flower.
  2. Corolla is the second nonessential unit and is composed of petals and are coloured and helps to attract pollinators.
  3. Stamens or androecium are the male reproductive part and responsible for the production of pollen grains (male gamete).
  4. Carpels, pistil or gynoecium are the female reproductive part and produce ovum (female gamete).

So, the correct option is 'Sepals, petals, stamen, and pistil'.

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

The female flowers are composed of the 

  1. Pistil, style and ovary

  2. Anther, stigma and filament

  3. Ovary, style and stigma

  4. Ovule, anther and stigma
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carpels, pistil or gynoecium are the female reproductive part of the flower that consists of a stigma that holds the pollen grains, a style that leads the path of pollen tube and ovary produce ovum (female gamete). The flower that has the only pistil is referred to as female flower.

So, the correct option is 'Ovary, style and stigma'

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

Choose the correct statement from the following.

  1. Cleistogamous flowers always exhibit autogamy

  2. Chasmogamous flowers always exhibit geitonogamy

  3. Cleistogamous flowers exhibit both autogamy and geitonogamy

  4. Chasmogamous flowers never exhibit autogamy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cleistogamous flowers (that do not open at all) always exhibit autogamy, whereas chasmogamous flowers(with exposed anthers and stigma) can exhibit autogamy, geitonogamy or xenogamy.

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

The male flowers are 

  1. The flowers which contain only the anther

  2. The flowers which contain the stamen

  3. The flowers which contain filament

  4. The flowers which contain only the pistil
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Stamens or androecium are the male reproductive part  contains filament which is aslender stalk and anther is bilobed and responsible for the production of pollen grains (male gamete).The flower with stamens is referred to as male flower.

So the correct option is "The flowers which contain the stamen".

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

Statement $1$ : Unisexual flowers are either staminate flowers or pistillate flowers.
Statement $2$ : Both monoecious and dioecious plants have unisexual flowers.

  1. Both statement $1$ and $2$ are correct
  2. Statement $1$ is correct but statement $2$ is incorrect
  3. Statement $1$ is incorrect but statement $2$ is correct
  4. Both statement $1$ and $2$ are incorrect
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In flowering plants, the unisexual male flower is staminate, i.e., bearing stamens, while the female flower is pistillate i.e., bearing pistils. In some flowering plants, both, and female may be present on same individual (monoecious) or on separate individuals (dioecious).

So, the correct option is 'Statement 1 is correct but statement 2 is incorrect'.

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

Consider the following statements and select the option that correctly fills the blanks.

  1. Mucor mucedo is _____ fungi.
  2. China rose plant bears ________ flowers.
  3. Marchantia is a _______ bryophyte.

  1. Homothallic , Bisexual and Dioecious

  2. Heterothallic, Bisexual and Dioecious

  3. Heterothallic, Unisexual and Monoecious

  4. Homothallic and Unisexual and Monoecious
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  1. Mucor mucedo is homothallic (self-compatible ) fungi.
  2. China rose or Hibiscus flower has both stamen and pistil present on the same plant so it bears a bisexual flower.
  3. In Marchantia is a liverwort in which male and female are born on different plants so it is dioecious bryophyte.
So the correct option is  'Homothallic, Bisexual and Dioecious'

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

If a water soaked seed is pressed, a small drop of water comes out through the ...............

  1. Stomata

  2. Lenticel

  3. Micopyle

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

When a soaked seed is pressed the water comes out from the pore of the seed which is known as the micropyle.

Stomata and lenticels are not present in the seed.
Radical is a part of the seed which will develop into the roots.
So the correct answer is ' Micropyle'.

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'.