Q.1.

Select the best option/answer and fill in the appropriate box on the Answer Sheet. (1 × 20 = 20)

(i) The disease causing protozoan is:

(a) Amoeba
(b) Paramecium
(c) Stentor
(d) Trypanosoma
(e) None of these

(ii) Binucleate protozoan is:

(a) Mastigo-amoeba
(b) Toxoplasma
(c) Didymium
(d) Trichonympha
(e) None of these

(iii) Spicules in sponges are secreted by cells called:

(a) Chromocytes
(b) Thesocytes
(c) Scleroblasts
(d) Spongoblast
(e) None of these

(iv) Which one of the following coelenterates is also called Portuguese-man of war?

(a) Hydra
(b) Velella
(c) Obelia
(d) Physalia
(e) None of these

(v) Pseudocoelomate animals are:

(a) Coelenterates
(b) Nematodes
(c) Annelids
(d) Arthropods
(e) None of these

(vi) Earthworm belongs to:

(a) Phylum Platyhelminthes
(b) Nematode
(c) Mollusca
(d) Arthropoda
(e) None of these

(vii) The number of arms in octopus is:

(a) Four
(b) Six
(c) Eight
(d) Ten
(e) None of these

(viii) The excretory organ of cockroach is:

(a) Flame cell
(b) Nephridia
(c) Coxal gland
(d) Green gland
(e) None of these

(ix) The compound eyes are present in:

(a) Cuttle fish
(b) Sea urchin
(c) Sea mouse
(d) Honey bee
(e) None of these

(x) Balanoglossus belongs to:

(a) Hemichordata
(b) Cephalochordata
(c) Urochordata
(d) Craniata
(e) None of these

(xi) The extinct vertebrates are:

(a) Elasmobranchi
(b) Placodermi
(c) Osteichthyes
(d) All of these
(e) None of these

(xii) The type of scales found in shark is:

(a) Placoid scale
(b) Ganoid scale
(c) Cosmoid scale
(d) Cycloid scale
(e) None of these

(xiii) All of the following animals have three-chambered heart except:

(a) Uromastix
(b) Snake
(c) Wall lizard
(d) Crocodile
(e) None of these

(xiv) An animal group having radially symmetrical adults but bilaterally symmetrical larvae is:

(a) Annelids
(b) Echinoderm
(c) Chordates
(d) All of these
(e) None of these

(xv) Which one of the following is not an extra embryonic membrane?

(a) Pleura
(b) Amnion
(c) Chorion
(d) Allantoise
(e) None of these

(xvi) The egg-laying mammals such as Duck-billed platypus and spiny anteater are found in:

(a) Asia
(b) North America
(c) South America
(d) Australia
(e) None of these

(xvii) Renal portal system is absent in:

(a) Mammals
(b) Fish
(c) Amphibian
(d) Reptiles
(e) None of these

(xviii) Swim bladder is present in:

(a) Amphibia
(b) Giant turtle
(c) Sea snake
(d) All of these
(e) None of these

(xix) Diencephalons is a part of:

(a) Circulatory system
(b) Excretory system
(c) Nervous system
(d) Respiratory system
(e) None of these

(xx) Microlecithal egg is found in:

(a) Reptiles
(b) Birds
(c) Amphibian
(d) All of these
(e) None of these

PART-II

NOTE:

(i) PART-II is to be attempted on separate Answer Book.

(ii) Attempt ONLY FOUR questions from PART-II, selecting TWO questions from each SECTION. All questions carry EQUAL marks.

(iii) Extra attempt of any question or any part of the attempted question will not be considered.

SECTION – I

Q.2.

(a) Describe reproduction in Paramecium. (10)

(b) Explain the different kinds of spicules in Porifera. (10)

Q.3.

(a) Discuss polymorphism in Coelenterates. (10)

(b) Explain the life cycle of Obelia. (10)

Q.4.

(a) What are Platyhelminths? (10)

(b) Describe the life cycle of any medically important Platyhelminth. (10)

Q.5.

Write short notes on: (5 × 4 = 20)

(a) Metamerism

(b) Mouth parts of insects

(c) Foot in Mollusca

(d) Larvae of Echinoderm

SECTION – II

Q.6.

(a) Give an account of arterial system of pigeon. (10)

(b) Explain hepatic portal system. (10)

Q.7.

(a) What is Gastrulation? Describe gastrulation in frog. (10)

(b) Write an essay on parental care in Mammals. (10)

Q.8.

Write short notes on the following: (5 × 4 = 20)

(a) Hairs in Mammals

(b) Development of bone

(c) Fish migration

(d) Egg types

Q.1.

Select the best option/answer and fill in the appropriate box on the Answer Sheet. (1 × 20 = 20)

(i) Which one of the enzymes is present in saliva?

(a) Tyaline
(b) Pepsin
(c) Enterokinase
(d) Lipase
(e) None of these

(ii) Which one of the following acts as Secondary Messenger after hormonal action on target cells?

(a) ATP
(b) CTP
(c) cAMP
(d) ADP
(e) None of these

(iii) Besides nucleus of cell, which organelles also contain DNA?

(a) Golgi bodies
(b) Lysosome
(c) Mitochondria
(d) Cell Membrane
(e) None of these

(iv) Lysosome in a cell is responsible for:

(a) Autolysis
(b) Autophagy
(c) Intracellular digestion
(d) All of these
(e) None of these

(v) ABO blood system in human is example of:

(a) Epistasis
(b) Linkage
(c) Polygenic inheritance
(d) Multiple allele
(e) None of these

(vi) Who described sex linkage in Drosophila?

(a) Sutton
(b) Garth Nicolson
(c) Jonathan Singer
(d) Robertson
(e) None of these

(vii) The number of cranial nerves in man is:

(a) 8
(b) 10
(c) 12
(d) 14
(e) None of these

(viii) Wings of birds and fly are examples of:

(a) Homologous organ
(b) Analogous organ
(c) Vestigial organ
(d) All of these
(e) None of these

(ix) The main chemical composition of ribosome is:

(a) RNA + Protein
(b) DNA + Protein
(c) Protein + Carbohydrate
(d) Protein + Lipids
(e) None of these

(x) The hormone cortisone is secreted by:

(a) Pituitary gland
(b) Ovary
(c) Pancreas
(d) Adrenal gland
(e) None of these

(xi) In pond ecosystem the primary consumers are:

(a) Zooplankton
(b) Insect larvae
(c) Fish
(d) All of these
(e) None of these

(xii) The XX, XO sex determination mechanism is present in:

(a) Man
(b) Grasshopper
(c) Birds
(d) All of these
(e) None of these

(xiii) The DNA replication is:

(a) Conservative
(b) Semi-conservative
(c) Dispersive
(d) Equatorial
(e) None of these

(xiv) Which one of the following genetic disorders is dominant in man?

(a) Colour blindness
(b) Haemophilia
(c) Tay-Sachs
(d) All of these
(e) None of these

(xv) The abiotic factor that brings sudden changes in ecosystem is:

(a) Light
(b) Soil
(c) Inorganic nutrients
(d) Fire
(e) None of these

(xvi) In human, blood clotting is due to the presence of protein called:

(a) Albumin
(b) Globulin
(c) Haemoglobin
(d) Actin
(e) None of these

(xvii) Male sex hormones are collectively known as:

(a) Estrogen
(b) Androgen
(c) Cortisone
(d) Somatotrophic
(e) None of these

(xviii) Which one of the following is not a membrane-bound cell organelle?

(a) Mitochondria
(b) Endoplasmic Reticulum
(c) Ribosome
(d) Chloroplast
(e) None of these

(xix) The enzyme pepsin is present in:

(a) Pancreatic Juice
(b) Bile
(c) Saliva
(d) Gastric Juice
(e) None of these

(xx) The change in species composition of a community over a long period of time is called:

(a) Food chain
(b) Food web
(c) Ecological succession
(d) Niche
(e) None of these

PART-II

NOTE:

(i) PART-II is to be attempted on separate Answer Book.

(ii) Attempt ONLY FOUR questions from PART-II, selecting TWO questions from each SECTION. All questions carry EQUAL marks.

(iii) Extra attempt of any question or any part of the attempted question will not be considered.

SECTION – I

Q.2.

(a) Describe the structure, chemical composition and function of Golgi complex. (10)

(b) Explain transport mechanism of plasma membrane. (10)

Q.3.

(a) Differentiate between Mitosis and Meiosis cell division. (10)

(b) Define linkage with examples. (10)

Q.4.

(a) What are respiratory pigments? Describe haemoglobin in detail. (10)

(b) Explain digestion of protein. (10)

Q.5.

(a) Describe the main component of nervous system. (10)

(b) How nerve impulse is generated in neuron? (10)

SECTION – II

Q.6.

(a) Explain the Darwin theory about evolution. (10)

(b) Give an account of species concept. (10)

Q.7.

(a) Differentiate between complete and incomplete ecosystem. (10)

(b) Describe Air Pollution. (10)

Q.8.

Write short notes on the following:  (5 × 4 = 20)

(a) Evolutionary trend

(b) Phylogeny

(c) Multiple alleles

(d) Fossils

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