12th Standard CBSE Syllabus & Materials

12th Standard CBSE

CBSE 12th Economics Government Budget and the Economy Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Interface Python with MySQL - New Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Database Concept - New Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Data Communication - New Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Data Structures - New Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Functions - New Previous year Question Papers Study Material - QB365 Set A

CBSE 12th Standard Biology Subject Reproduction in Organisms Case Study Questions With Solution 2021

Published on: 21/05/2021

QB365 Provides the updated CASE Study Questions for Class 12 Biology, and also provide the detail solution for each and every case study questions . Case study questions are latest updated question pattern from NCERT, QB365 will helps to get more marks in Exams

Download CBSE Class 12th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Biology

Questions + Answers key

Take MCQ Biology Test

QB365 Student Learing Managemnet System

Std: 12th Standard CBSE - Biology

chapter: - Case study Questions

Visit QB365-SLMS - https://www.qb365.in/slms/ Complete Questions and Answers

Questions:

Case Study Questions

5 x 4 = 20

The reproductive organs of
(i) Chara, an alga and
(ii) earthworm, an animal are sbown in tbe above diagram.
(a) Identify and name tbe male and female reproductive organs of tbese two organisms.
(b) What technical term is given to
(i) the plant, Chara and
(ii) the animal, earthworm, respectively, that possess both male and female reproductive organs in the same individual?

(a) State the type of gametes sbown in the diagram.
(b) Identify the process taking place and the resultant structure.
(c) Name an organism that reproduces in tbis manner.

(a) Identify the asexual reproductive units and the respective organism (A and B) producing each of them, as shown in the diagram given.
(b) Write two differences between these two reproductive units.

Identify the plant and the vegetative propagule ofA, Band C.

The stages in the binary fission of Amoeba are shown above.
(a) Arrange the stages in their proper natural sequence in binary fission.
(b) How does this differ from the process of sporulation employed by Amoeba?

Visit QB365-SLMS - https://www.qb365.in/slms/

Answers Key:

Case Study Questions

5 x 4 = 20

(i) A - Female organ (Oogonium)
B - Male organ (Antheridium)
(ii) C - Male organ (Testis)
D - Female organ (Ovary)
b) (i) Monoecious
(ii) HermaphroditelBisexual

(a) Isogametes (b) Syngamy (c) Zygote

(a) A - Zoospores, produced by Chlamydomonas
B - Conidia, produced by Penicillium
(b) Differences

Zoospores	Conidia
(i) Zoospores are motile - celts with flagella.	(i) Conidia are nonmotile and dispersed by wind.
(ii) Zoospores are produced endogenously, i.e. within zoosporangium.	(ii) Conidia are nonmotile and dispersed by wind.

A - Agave, Bulbil
B - Bryophyl/um, Adventitious leaf buds
C - Eichhornia, Offset

(a) D\(\rightarrow\)A\(\rightarrow\)C\(\rightarrow\)E\(\rightarrow\)B
(b) Differences

Binary Fission	Sporulation
(i) It occurs during favourable conditions.	(i) It occurs during unfavourable seasons
(ii) No cyst is formed	(ii) A cyst is formed.
(iii) By binary fission, only two daughter cells are formed.	(iii) By multiple fission, a number of daughter cells are formed