Online Biology Quiz

1. Nitrogen fixation is generally brought about by :
(A) Bacteria
(B) Bacteria and blue-green algae
(C) Algae
(D) Fungi


2. Which one of the following is correctly matched?
(A) Primary Consumer : Locust
(B) Secondary Consumer : Plants
(C) Tertiary Consumer : Snake
(D) Products : Kite


3. Which one of the following is correctly matched?
(A) Salivary gland : Gastric Juice
(B) Liver : Amylase
(C) Pancreas : Trypsinogen
(D) Stomach : Bile


4. Mitochondria will be found in abundance, where there is :
(A) A wound activity in the body
(B) Maximum activity in the body
(C) Least activity in the body
(D) Average activity in the body


5. The shape of human immunodeficiency (HIV) virus is :
(A) Spherical in shape
(B) Rod-like in shape
(C) Spiral-like in shape
(D) Comma-like in shape


6. Which one of the following is correctly matched?
(A) Haemoglobin is found in : Calcium
(B) Green plants contain : Blood
(C) The largest gland in human body is : Liver
(D) The most abundantly found metal in the human body : Starch


7. Which of the organelles given below is known as ‘the powerhouse’ of the cell?
(A) Lysosome
(B) Golgi body
(C) Mitochondrion
(D) Ribosome


8. The chromosome number is reduced to half during :
(A) Mitosis
(B) Meiosis
(C) Amitosis
(D) Apospory


130. Angiosperms are commonly referred as :
(A) Non-flowering plants
(B) Xerophytes
(C) Hydrophytes
(D) Flowering plants


10. To which kingdom bacteria belong?
(A) Plantae
(B) Protista
(C) Animalae
(D) Monera


11. The term ‘test-tube baby’ refers to :
(A) A baby developed in a test-tube
(B) An artificial baby developed in a testtube
(C) In vitro fertilisation and embryo replacement
(D) A baby developed from ovum without fertilisation


12. Hyaluronidase is found in :
(A) The acrosome of mammalian sperm
(B) The centrosome of mammalian ovum
(C) The lysosome of ovum
(D) The lysosome of sperm


13. The chromosome composition of man is :
(A) 44AA + XY
(B) 44AA + XX
(C) 22A + X
(D) 22A + Y


14. Which one of the following is correctly matched?
(A) Platyhelminthes : Sponge
(B) Ciliophora : Paramecium
(C) Sarcodina : Malarial parasite
(D) Porifera : Tapeworm


15. Which one of the following is mismatched?
(A) Salivary gland : An endocrine gland
(B) Pancreas : Islets of Langerhans
(C) Birds : Aves
(D) Kidney : Ultrafiltration


16. The genetic material of a cell resides in :
(A) Cytoplasm
(B) Protoplasm
(C) Ribosome
(D) DNA


17. Mutation theory was proposed by :
(A) Darwin
(B) Morgan
(C) Lamarck
(D) Hugo de Vries


18. Development of a sporophyte directly from the sporophytic tissue is called :
(A) Double fertilisation
(B) Triple fusion
(C) Apospory
(D) Syngamy


19. Autotrophs in an ecosystem are called :
(A) Producers
(B) Consumers
(C) Decomposers
(D) Abiotic constituents


20. Acromegaly is caused by irregular secretion of :
(A) Pituitary
(B) Thyroid
(C) Adrenal
(D) Pancreas