Download App

How do Organisms Reproduce? — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHow do Organisms Reproduce?3 Marks
Question
List six specific characteristics of sexual reproduction.
✓

Answer

Characteristics:
  • Two parents are involved.
  • Two dissimilar gametes are formed, gamete formation involves meiosis.
  • Variations are produced.
  • Occurs in all the higher and some of the lower organisms.
  • Fertilisation/fusion of gametes leading to zygote formation Slow.

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

Explore more

More "[3 Mark Questions]" from How do Organisms Reproduce?→How do Organisms Reproduce? — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Sudha finds out that the sharp image of window pane of her science laboratory is formed at a distance of $15 \ cm$ from the lens. She now tries to focus the building visible of her outside the window instead of the window pane without disturbing the lens. In which direction will she move the screen to obtain a sharp image of the building? What is the approximate focal length of this lens?
→
What happens when:
  1. Accidently, Planaria gets cut into many pieces?
  2. Bryophyllum leaf falls on the wet soil?
  3. On maturation sporangia of Rhizopus bursts?
→
An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reactions involved.
→
How far should an object be placed from a convex lens of focal length 20cm to obtain its image at a distance of 30cm from the lens? What will be the height of the image, if the objects is 6cm tall?
→
Calculate the work done in moving a charge of 4 coulombs from a point at 220 volts to another point at 230 volts.
→
State Mendel’s second law of inheritance.
→
What change is made in the eye to enable it to focus on objects situated at different distances? Illustrate your answer with the help of diagrams.
→
Give the position, size and nature of image formed by a concave lens when the object is placed:
  1. Anywhere between optical centre and infinity.
  2. At infinit.
→
Calculate the focal length of a convex lens which produces a virtual image at a distance of 50cm of an object placed 20cm in front of it.
→
i. In humans, if gene B gives brown eyes and gene b gives blue eyes, what will be the colour of eyes of the persons having the following combination of genes? (a) Bb (b) bb (c) BB
ii. What do you class this trait of eye colour in human? Explain.
→