Download PTU B.Sc-Hons 2020 March 1st Sem 76929 Introductory Biology Question Paper

FirstRanker.com

Roll No. EEEEEEEE [ ] Total No. of Pages : 02
Total No. of Questions : 09

--- Content provided by​ FirstRanker.com ---

B.Sc. (Hons)Agriculture (2019 Batch) (Sem.-1)
INTRODUCTORY BIOLOGY
Subject Code : BSAG-106-19(A)
M.Code : 76929
Time : 3 Hrs. Max. Marks : 60

--- Content provided by​ FirstRanker.com ---

INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

--- Content provided by‌ FirstRanker.com ---

1. Write briefly :
   1. Equational division
   2. Perigyny
   3. Taxonomic hierarchies
   4. Differentiate between animal cell and plant cell
   5. Genetic drift

   --- Content provided by FirstRanker.com ---

   6. Vestigial organs
   7. Eugenics
   8. Numerical taxonomy
   9. Differentiate between phyllode and phylloclade
   10. Ribosomes

   --- Content provided by⁠ FirstRanker.com ---

SECTION-B

2. What is racemose inflorescence? Give suitable examples.
3. Explain various stages of meiosis-I with suitable diagram.
4. What is Binomial nomenclature? Write various rules of binomial nomenclature.

--- Content provided by FirstRanker.com ---

5. Describe important features, floral formula and economic importance of family Poaceae.
6. Give an outline of five-kingdom classification. What are advantages and disadvantages of this classification?

SECTION-C

7. Explain structure and functions of :
   1. Nucleus
   2. Mitochondria.

   --- Content provided by⁠ FirstRanker.com ---

8. Explain isolation and natural selection in Evolution.
9. Give an illustrated description of :
   1. Maize grain
   2. Gram seed

--- Content provided by‍ FirstRanker.com ---

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.