Time: 3 hours 15 minutes. Full Marks: 90
Group - A
(Answer to all questions is compulsory)
1. Write the answer in complete sentence by choosing the correct answer for each question with respective serial number. 1x 15=15
a) Select from the following the term that describes the movement in the leaves of Sundew
i) photonastic ii) thermnostic iii) Chemonastic iv) seismonastic
b) Find the hormone that is found in juice of tomato
i) Auxin ii) Gibberellin iii) cytokinin iv) Florigen
c) Identify the hormone popularity called the maternity hormone
i) Oestrogen ii) progesterone iii) prolactin iv) testosterone
d) Choose the phase of mitosis during which the chromosomes are arranged on the equator of the cell
i) prophase ii) metaphase iii) anaphase iv) telophase
e) Identify the part from which fruit is formed after fertilization
i) stigma ii) ovary iii) ovule iv) ovum
f) The age from 11 to 19 years in humans is called
i) teenage ii) adulthood iii) adolescence iv) senescence
g) Laws of heredity has been proposed by
i) Lamarck ii) Darwin iii) Mendel iv) Miller
h) Calculate how many types of gametes are formed from guinea-pig having genotype Bbrr
i) 1 ii) 2 iii) 4 iv) 3
i) Identify the nature of hydrophilia
i) sex linked dominant
ii) autosomal dominant
iii) sex linked recessive
iv) autosomal recessive
j) Select the propounded on the theory of "inheritance of acquired characters " from the following
i) Lamarck ii) Darwin iii) Mendel iv) Weisman
k) Recollect from your memory the oldest fossil of horse
i) pliohippus ii) Merychippus iii) Mesohippus iv) Eohippus
l) Determine the following the one which according to you is not a vestigial organ is
i) Finger of hand ii) Veriform Appendix iii) Wings of ostrich iv) Coccyx
m) Identify the bacteria which you think converts the nitrogenous waste or dead bodies into ammonia
i) Nitrosomonas ii) Bacillus mycoides iii) Nitrobacter iv) Thioabecillus
n) Select out of the following the one which is not chronic disease of lung
i) bronchitis ii) asthma iii) fever iv) lung cancer
o) Select from the following the one that is not in-situ conversation
i) National park ii) sanctuary iii) zoo iv) biosphere reserve
Group B
2. Answer 21 questions out of 26 questions given as below instructed. (1x 21=21)
Fill in the blanks with proper words in the following sentences from (any five) (1x5= 5)
a) ____ is secreted from islets of Langehans of pancreas.
b) According to you ____synthesis protein of the cell during cell division.
c) Hemophilia father's daughter is always____ of hemophilia.
d) Crocodile is considered to be advanced in evolution over other reptiles as it has a ___ chamberd heart.
e) if you visit a place with maximum biodiversity, you will be able to consider it to be a ___
f) Due to requirement of reserpine for treatment of high blood pressure, the plant is becoming extinct due to overuse.
Decide whether the following statements are true or false (any five) 1x5= 5
g) if a person cannot see nearby objects p, he needs to use concave lens.
h) In a base pairing Adenine binds to Thymine.
i) Austosmo are responsible for sex stimulation in human beings.
j) Darwin wrote the book 'Origin of Species By means of Natural Selection'
k) Azotobacter is a denitrifying bacteria.
l) Auxin helps in tropic movement in plants.
Match the words in column A with those which are most appropriate in column B & rewrite the correct pair mentioning the serial number of both (any five) 1x5= 5
Column A
A) Ciliary locomotion
B) Fragmentation
C) Tt
D) Wings of birds and butterflies
E) Singalila National Park
F) Pollinating agent
Column B
i) honey bee
ii) hybrid tall plants
iii) analogous organ
iv) Paramecium
v) Red panda
vi) spirogyra
vii) homologous organ
Answer in a single word or in a single sentences (any six). 1x6=6
m) Choose the odd one and write it:
STH, ACTH, ADH, GTH
n) Write one function of a Ganglion
o) A pair of related terms is given below on the basis of the relationship in the first pair write the suitable word in the gap of 2nd pair
DNA: Thymine: : RNA: ____
p) What is the ratio of plants in F₁ generation when a hybrid tall plant is crossed with pure dwarf one?
q) Determine the type of gametes that can be obtained from a female human being.
r) How many airsac are present in pigeon ?
s) Amongs the following four terms one includes the other three . Find out them term and write it--
Nitrogen cycle, Nitrification, Denitrification, Ammonification
Group - C
3. Answer any 12 questions in 2-3 sentences out of 17 questions given below : 2x12= 24
a) How does cytokinin affect plant growth ?
b) On the basis of the following points distinguish between Axon and dendron:
i) Structure ii) function
c) State two purposes of locomotion
d) Explain how flexion and extension are opposite in action.
e) Name an animal and plant where reproduction occurs by budding.
f) What do you mean by fertilization in plants ?
g) Explain how cross pollination is different from self pollination regarding use of pollinating agents and characters of offspring produced.
h) "Male is considered as heterogametic sex"- justify the statement.
i) if husband is normal and wife is carrier of Thalassemia , what may happen to their four children?
j) Write down the law that Mendel inferred by performing the experiment on pure tall and pure dwarf pea plant.
k) Mention two significances of fossils in evolution.
l) State the importance of airsacs of birds.
m) Why do you consider the following structure are important
i) swim bladder in rohu fish ii) salt glad in Sundari plant
n) Assess why SPM is so harmful to human health.
o) name the biodiversity hotspots which lie in India.
p) Explain why Cryopreservation is to important for conserving endangered species.
q) JFM is helpful to protect, conserve and flourish our forest reserve- Explain how.
Group D
(Long Answer Type Question)
4) write the 6 question or their alternatives given below. The make allotted for each questions is 5
( the division of make is either 3 + 2, 2 + 2 or 5) 5x6= 30
a) Draw a neat diagram of a neurone and label the following parts: (2+3=5)
i) Dendrite ii) Axon iii) Schwann cell iv) Node of Ranvier
OR
Draw a neat diagram of anaphase stage of animal cell division and label the following parts.
i) Chromatid ii) Centrosome iii) Continuous fibre iv) Chromosomal fibre
b) Write chemical composition of chromosome. "Amitosis is known as direct cell division". Explain with the help of an example. (2+3=5)
OR
What do you understand by alteration of generation? Explain the phase of growth in living things.
c) Why Mendel selected pea plant for his experiment ? Explain incomplete dominance with checker board. 2+3=5
OR
A patient has come with certain symptoms. How will you identify that he is suffering from Hemophilia ? Write the name of organs affected in a Thalassemia patient.
d) Illustrate with diagram how the hearts of vertebrates explain the evolution theory. 5
OR
What are the advantages of oval RBC in camel to live in dry desert condition ? How are analogous organs and homologous organs different from each other ?
e) What is biomagnification ? Explain with suitable example how does it happen, in and aquatic food chain. (3+2=5)
OR
Analyse three major environment to problems of the Sundarbans with their impacts on biodiversity. Compare between Wildlife sanctuary and Biosphere Reserve.
f) Through Sundarban has been recognised as a biosphere reserved it is gradually decreasing in size and facing some severe environmental problems. Elaborate upon this topic with suitable examples. 5
OR
Explain the following terms:
i) acid rain
ii) global warming
iii) Deafness
iv) Endemic Species
v) Poaching
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