Question
‘Fertilisation is not an obligatory event for fruit production in certain plants’. Explain the statement.

Answer

This can be observed in parthenocarpic fruits. The ‘seedless fruits’ that are available in the market, such as pomegranate, grapes, etc., are good examples. Flowers of these plants are sprayed by a growth hormone that induces fruit development even though fertilisation has not occurred. The ovules of such fruits, however, fail to develop into seeds.

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

  1. HIV and Hepatitis B are STDs. Mention any two other ways by which they can be transmitted to a healthy person.
  2. Why is early detection of STD essential? What can it lead to otherwise?
Study the table showing the population interaction between species Z and Y respectively. Assign the appropriate +/– signs for A,B,D,E and respective interactions for C and F.
Image
Give the name of structures by which testes are suspended in the scrotum.
DNA separated from one cell, when introduced into another cell is able to bestow some of the properties of former to the latter. What is this change called in technical terms? Describe the experimental evidences which led to the discovery of the above phenomenon.
Your school has been selected by the Department of Education to organise and host an interschool seminar on "Reproductive Health - Problems and Practices". However, many parents are reluctant to permit their wards to attend it. Their argument is that the topic is "too embarrassing."
Put forth four arguments with appropriate reasons and explanation to justify the topic to be very essential and timely.
Recently a girl baby has been reported to suffer from haemophilia. How is it possible? Explain with the help of a cross.
Enzymes play an important role in detergents that we use for washing clothes. These enzymes are obtained from some unique microorganisms, enlist atleast two of them. Also name the enzyme.
Write a note on cultural and religious importance of biodiversity Which type of conservation measures, in situ or ex-situ will help the larger number species to survive? Explain.
Name the hormones produced only during pregnancy in a human female. Mention their source organ.
While creation and presence of variation are directionless, natural selection is directional as it is in the context of adaptation. Comment.