Grade 10 Science
Lesson- How do organisms reproduce?
WORKSHEET-Question Bank:
Ø Blue prints of body design are stored in the DNA. Why?
Ø Producing individuals by parents consume a lot of energy. So, why should an individual organism waste energy in the process, it does not need to stay alive?
Ø Protozoan’s reproduce by binary fission as well as by multiple fission. In your opinion which process is better and why?
Ø Why is variation beneficial to the species but not necessary for the individual?
Ø What is the advantage of reproduction through spores in the case of Rhizopus?
Ø The simple animals such as Planaria can be cut into number of pieces and each piece grows into a complex organism. What is this process known as?
Ø Which process taking place in the nucleus of a cell leads to variation in the offspring during reproduction?
Ø Which type of layering is done in Jasmine? What causes joining up of stock and scion in grafting? Name one positive trait each of the plant contributing stock and scion should have.
Ø Why are variations possible in progeny of sexually reproductive individuals?
Ø Name the essential and the accessory whorls of the flower and also draw and label their single units.
Ø What is syngamy?
Ø What is advantage of fruit formation in plant?
Ø Differentiate the following:
(a) Asexual and Sexual Reproduction
(b) Self- pollination and Cross pollination
(c)Unisexual and Bisexual flower
(d) Dicot seed and Monocot seed
(e)Monoecious and Dioecious plant
Ø State the methods used for growing rose plants.
Ø Name two plants which reproduce through spores.
Ø How does Hydra reproduce? Name another organism that reproduces by a similar method.
Ø Can you think of reasons why more complex organisms cannot give rise to new individuals through regeneration?
Ø How is the process of pollination different from fertilization?
Ø What are the steps involved in fertilization and formation of seeds?
Ø How does binary fission differ from multiple fission?
Ø How are the modes for reproduction different in unicellular and multicellular organisms?
Ø How does reproduction help in providing stability to populations of species?
Ø Draw the L.S. of an angiosperm flower.
Ø Draw the pollen tube germination in an angiosperm.