olympiad@cscacademy.org

Class-11th (Biology) Olympiad - CANBO

Mock Instructions

  • 1. This is Model Question Paper.
  • 2. This is an Online Worksheet.
  • 3. Total Questions-50.
  • 4. Total Time-60 minutes.

Q.1- As we go from species to kingdom in a taxonomic hierarchy, the number of common characteristics:

(a) Will decrease.

(b) Will increase.

(c) Remain same.

(d) May increase or decrease.

Q.2- Botanical gardens and zoological parks have:

(a) Collection of endemic living species only.

(b) Collection of exotic living species only.

(c) Collection of endemic and exotic living species.

(d) Collection of only local plants and animals.

Q.3- Organisms living in salty areas are called as:

(a) Methanogens.

(b) Halophiles.

(c) Heliophytes.

(d) Thermoacidophiles.

Q.4- A dikaryon is formed when:

(a) Meiosis is arrested.

(b) The two haploid cells do not fuse immediately.

(c) Cytoplasm does not fuse.

(d) None of the above

Q.5- Difference between Virus and Viroid is:

(a) Absence of protein coat in viroid but present in virus.

(b) Presence of low molecular weight RNA in virus but absent in viroid.

(c) Both a and b

(d) None of the above

Q.6-  In an inflorescence where flowers are borne laterally in an acropetal succession, the position of the youngest floral bud in the floral axis shall be:

(a) Proximal

(b) Distal

(c) Intercalary

(d) Any where

Q.7- Endosperm, a product of double fertilization in angiosperms is absent in the seeds of:

(a) Coconut.

(b) Orchids.

(c) Maize.

(d) Castor.

Q.8- Meiosis results in:

(a) Production of gametes

(b) Reduction in the number of chromosomes

(c) Introduction of variation

(d) all of the above

Q.9- Mitosis is characterized by:

(a) Reduction division

(b) Equal division

(c) Both reduction and equal division

(d) None of the above

Q.10- Which metal ion is a constituent of chlorophyll?

(a) Iron

(b) Copper

(c) Magnesium

(d) Zinc

Q.11-   Which light range is most effective in photosynthesis?

(a) Blue

(b) Green

(c) Red

(d) Violet

Q.12-  Regarding the functions of our respiratory system, mark the wrong entry.

(a) Humidifies the air

(b) Warms up the air

(c) Diffusion of gases

(d) Cleans up the air

Q.13-  It is known that exposure to carbon monoxide is harmful to animals because

(a) It reduces CO2 transport

(b) It reduces O2 transport

(c) It increases CO2 transport

(d) It destroys hemoglobin

Q.14- All living organisms are linked to one another because:

(a) They have common genetic material of the same type

(b) They share common genetic material but to varying degrees

(c) All have common cellular organization

(d) All of above

Q.15- Rearrange the following zones as seen in the root in vertical section and choose the correct option.

  1. Root hair zone
  2. Zone of meristems
  3. Rootcap zone
  4. Zone of maturation
  5. Zone of elongation

(a) C, B, E, A, D

(b) A, B, C, D, E

(c) D, E, A, C, B

(d) E, D, C, B, A