MCQ
Hybrid vigour is induced by
- AClonal selection
- BCrossing of plant
- ✓Crossing two plants
- DSpecies differentiation
✓
Answer
Correct option: C.
Crossing two plants
c
It's Obvious
It's Obvious
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The following diagram refers to the female reproductive system of human. Identify $A$ to $F$
→‘First line of defence' is known as
Inheritance of skin colour in humans is an example of
If a colour blind woman marries a normal visioned man, their sons will be
True coelom is covered by
Green manure plants belong to
World health organization has started a number of programmes to prevent spreading of $HIV$ infection
→Few such steps include
$I.$ ensuring use of disposable needles and syringes
$II.$ free distribution of condoms
$III.$ advocating safe sex
$IV.$ controlling drug abuse
Which of the steps given above are correct?
What do homologous organs indicates?
Which of the following statement(s) is/are true for menstrual cycle ?
(i) It occurs in female of all mammals,
(ii) In human non-pregnant normal females, ovulation is repeated at an average interval of about 28/29 days.
(iii) In human beings, ovulation cycles ceases around 50 years of age, that is termed as menopause.
(iv) Lack of menstruation is always an indicator of pregnancy.
(v) Menstruation only occurs if the released ovum is fertilised.
(vi) Menarche may also be due to stress, poor health.
(i) It occurs in female of all mammals,
(ii) In human non-pregnant normal females, ovulation is repeated at an average interval of about 28/29 days.
(iii) In human beings, ovulation cycles ceases around 50 years of age, that is termed as menopause.
(iv) Lack of menstruation is always an indicator of pregnancy.
(v) Menstruation only occurs if the released ovum is fertilised.
(vi) Menarche may also be due to stress, poor health.
Resorption of water and electrolytes by distal tubules of kidney and thereby diuresis reducing the loss of water through urine (diuresis) done by