Question
Correct the following statements:
  1. Surgical methods of contraception prevent gamete formation.
  2. All sexually transmitted diseases are completely curable.
  3. Oral pills are very popular contraceptives among the rural women.
  4. In E. T. techniques, embryos are always transferred into the uterus.

Answer

  1. Surgical methods of contraception prevent the flow of gamete during intercourse.
  2. All sexually transmitted diseases are not completely curable.
  3. Oral pills are very popular contraceptives among the urban women.
  4. In E.T. technique, 8 celled embryos are transferred into the fallopian tube while more than 8 celled embryos are transferred into the uterus.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The biology teacher was explaining about restriction enzymes and came to a point explaining that these enzymes are extracted from bacteria and are called as molecular scissors. Varun got curious and asked some questions for more clarity on the concept to his teacher.
  1. From which part of microorganisms are restriction enzymes derived?
  2. Why are restriction enzymes called molecular scissors?
  3. What if some strands are needed to be cut from within. Would that lead to wastage of DNA?
  4. What values are shown by Varun?
How does the transmission of each of the following diseases take place?
  1. Amoebiasis.
  2. Malaria.
  3. Ascariasis.
  4. Pneumonia.
Give the term/ reason:
Mechanism responsible for parturition.
Match the items in Column I with those in Column II.
S.No.
Column I
S.No.
Column II
(A)
Pyramid of energy
(i)
Phytoplanktons
(B)
Pyramid of biomass
(ii)
Mesic forest
(C)
Climax community
(iii)
Upright/ inverted
(D)
Hydrarch succession
(iv)
Alwayes upright
 
 
(v)
Pioneer species
Explain why a recessive allele is unable to express itself in a heterozygous state.
What is innate immunity? How is it accomplished in a human body?
Study the graph given below and answer the questions that follow:
Identify the ovarian phases during a menstrual cycle:
  1. 5th day to 12th day of the cycle.
  2. 14th day of the cycle.
  3. 16th day to 25th day of the cycle.
Trace the events that would take place in a flower from the time the pollen grain of the same species falls on the stigma up to the completion of fertilisation.
Inheritance pattern of flower colour in garden pea plant and snapdragon differs. Why is this difference observed? Explain showing the crosses up to $F_2$ generation.
If a desired gene is identified in an organism for some experiments, explain the process of the following:
i. Cutting this desired gene at specific location.
ii. Synthesis of multiple copies of this desired gene.