Tag: the life cycle of plants

Quizzes (23) Questions (114)

Questions Related to the life cycle of plants

Multiple choice botany modes of reproduction why do plants reproduce? reproduction and variation the life cycle of plants

Reproduction is not essential for an individual but to maintain the species.

  1. True

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

  • Reproduction is the process that ensures continuity of species. All Individuals of any species die after their lifespan but some of them leave behind offsprings that will ensure continuity of species.
  • Sterile members of any species, worker bees, mule etc. Complete their lifespan without reproduction. Hence, reproduction is not essential for any individual. 

So, the correct option is 'True'.

Multiple choice botany modes of reproduction why do plants reproduce? reproduction and variation the life cycle of plants

State the following statements are true or false.
Presence or absence of hymen is not a reliable indicator of virginity or sexual experience.

  1. True

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

The hymen is often torn during the first coitus. the presence or absence of the hymen is not a reliable indicator of virginity or sexual experience.

So, the correct option is 'True'.

Multiple choice botany modes of reproduction why do plants reproduce? reproduction and variation the life cycle of plants

Match Column I with Column II and select the correct option using the codes given below.

Column I Column II
A. Mons pubis 1. Embryo formation
B. Antrum 2. Sperm
C. Trophoectoderm 3. Female external genitalia
D. Nebenkern 4. Graafian follicle

  1. A - 3, B - 4, C - 2, D - 1

  2. A - 3, B - 4, C - 1, D - 2

  3. A - 3, B - 1, C - 4, D - 2

  4. A - 1, B - 4, C - 3, D - 2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The mons pubis is the rounded eminence, made by fatty tissue beneath the skin, lying in front of the pubic symphysis. The antrum is the portion of an ovarian follicle filled with follicular fluid. The trophectoderm is a layer of cells on the outer edge of a blastocyst. These cells provide nutrients for the developing embryo, facilitate attachment to the uterine lining and become part of the placenta. The nebenkern is a mitochondrial formation in the sperm of some insects such as Drosophila.

 So the correct option is ' A - 3, B - 4, C - 1, D - 2 '.

Multiple choice botany modes of reproduction why do plants reproduce? reproduction and variation the life cycle of plants

Only variations that confer an advantage to an individual organism will survive in a population. 

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
All the variations do not have an equal chance of surviving in the environment in which they find themselves. The chances of surviving depend on the nature of variations. Different individual would have different kind of advantages. A bacteria that can withstand heat will survive better in a heat wave. Selection of variants by environmental factors forms the basis for revolutionary process.
Multiple choice botany life processes in living organisms- part 2 parthenocarpic fruits parthenogenesis the life cycle of plants

Development of an embryo directly from an egg cell without the participation of a male gamete is termed as 

  1. Apospory

  2. Parthenogenesis

  3. Apogamy

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

Parthenogenesis is a form of asexual reproduction in which growth and development of embryos occur without fertilization. Parthenogenesis occurs naturally in many plants. The word parthenogenesis comes from the Greek; parthenos meaning virgin and genesis meaning birth.

Multiple choice botany asexual and sexual reproduction in plants parthenocarpic fruits parthenogenesis the life cycle of plants

The parthenocarpy is not advantageous in ......................

  1. Mango

  2. Coconut

  3. Pomegranate

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

A parthenocarpy fruit is a kind of fruit which is artificially grown, it is a seedless fruit which cannot reproduce by sexual means but only by asexual ones. Pomegranate fruit has only one edible part, that is seeds. Thus, parthenocarpic seeds cannot be produced in pomegranates.