Pt. Nagesh Dutt Public School Ajhara, Lalganj
Time- 40 Min.
Weekly Test- I (2015-16)
Class- XI Biology
Name……………………….
M.M. 70
Roll. No…………….
General Instructions:1- There are Total 26 Questions and five sections in the questions paper. All
questions are compulsory.
2- Section A contains question number 1 to 5, very short answer type questions of
one mark each.
3- Section B contains question number 6 to 10, short answer type 1 questions of
two marks each.
4- Section C contains question number 11 to 22, short answer type 11 questions of
three marks each.
5- Section D contains question number 23, value based question four marks.
6- Section E contains question number 24 to 26, Long answer type question of five
marks each.
Section- A
Q.1- Name the group of plants having multi cellular sex organs surrounded by a
sterile jacket but lacking vascular tissues.
Q.2- Name the spore producing leaves of pteridophytes.
Q.3- Which group of plant is called vascular cryptogams?
Q.4- Define diplontic life cycle.
Q.5- What is anisogamous.
Section- B
Q.6- Explain why gymnosperms fail to produce fruits.
Q.7-
Write the difference between syngamy and triple fusion.
Q.8- What is protonema Antheridium and Archegonium
Q.9- Write two differences between monocots and dicots.
Q.10- Write the difference between homosporous and heterosporous pteridophytes.
Section- C
Q.11- What is heterospory ? Briefly comment or its significance. Give two example.
Q.12- Name the classes of the phylum porifera . Give one example of each.
Q.13- Could the number of eggs or young ones produced by an oviparous and
viviparous mother be equal. If so why ? If not how?
Q.14- Both gymnosperms and angiosperms bear seeds . But then why are they
classified separately?
Q.15- “All vertebrates are chordates but all chordates are not vertebrates.” Justify
the statement.
Q.16- Write a note on economic importance of algae and gymnosperm.
Q.17- List the salient features of insects.
Q.18- What is alternation of generation. Describe with a suitable examples.
Q.19- Differentiate between Red algae and brown algae.
Q.20- Name the classes of the phylum protozoan. Give one example of each.
Q.21- Describe the important characteristic of gymnosperms.
Q.22- Outline the role of coelom in animals and types of coelom .
Section- D
Q.23- Monu one day asked his fater, “ Why lizards and snakes are not commonly
seen in winter season?” Father replied that he did not know the answer and
told him to discuss it with his biology teacher.
So, he discuss the matter with biology teacher who explained that these are
reptiles and are cold blooded animals.
Read the above passage and answer the following questions(i)
What are the characteristic features of reptiles.
(ii)
What is meant by cold blooded animals?
(iii)
What value is displayed by his father?
(iv)
Q.24- Describe life cycle of an angiosperms with labeled diagram of life cycle.
Q.25- Gametophyte is a dominant phase in the life cycle of a bryophyte. Explain.
Q.26- Write the distinguish features of the class mammalian.
Pt. Nagesh Dutt Public School Ajhara, Lalganj
Time- 40 Min.
Weekly Test- I (2015-16)
Class- XII Biology
Name……………………….
M.M. 70
Roll. No…………….
General Instructions:1- There are Total 26 Questions and five sections in the questions paper. All
questions are compulsory.
2- Section A contains question number 1 to 5, very short answer type questions of
one mark each.
3- Section B contains question number 6 to 10, short answer type 1 questions of
two marks each.
4- Section C contains question number 11 to 22, short answer type 11 questions of
three marks each.
5- Section D contains question number 23, value based question four marks.
6- Section E contains question number 24 to 26, Long answer type question of five
marks each.
Section- A
Q.1- A geneticist interested in studying variations and patterns of inheritance in living
beings prefers to choose organisms for experiments notice shorter life cycle.
Provide a reason.
Q.2- A garden pea plant (A) produced ‘Inflated yellow pod and another plant (B) of the
some species produced constricted green pods. Identify the dominant trait.
Q.3- How does the strength and weakness of linkage depends on linked genes.
Q.4- Name the respective pattern of inheritance where f1 phenotype.
(i) Does not resemble either of the two parents and is in between the two.
(ii) Resembles only one of the two parents.
Q.5- Pea flowers produce assured seed sets. Give reasons.
Section- B
Q.6- Do you think Mendel’s lave of ‘inheritance would have been different in the
characters that he chose were located on the same chromosome.
Q.7- What is law of segregation?
Q.8- With the help of one example, explain the phenomenon of co-dominance and
multiple allelism in human population.
Q.9- How does the gene ‘I’ control ABO blood groups in human? Write the effect the gene
has on the structure of red blood cells.
Q.10- Linkage and crossing over of genes are alternatives of each other. Justify with the
help of an example.
Section- C
Q.11- A pea plant with purple flowers was crossed with. White flowers producing 50
plants with only purple flowers. On selfing these plants produced 482 plant with
purple flower and 162 with white flowers. What genetic mechanism accounts for
these results? Explain.
Q.12- When tall pea plants were selfed, some of the offsprings were dwarf? Explain with
the help of a punett square.
Q.13- Explain the law of dominance using a monohybrid cross.
Q.14- How are alleles of particular gene differ from each other. Explain its significance?
Q.15- Explain the sex determination mechanism in insect like drosophila and grasshoper.
Q.16- Explain the sex determination mechanism in humans. How is it different from birds?
Q.17- Describe phenylketonuria.
Q.18- Give difference between dominant and recessive genes in three points.
Q.19- Haemophilia is a sex linked recessive disorder of humans. The pedigree chart given
below shows the inheritance of haemophillia in one family. Study the pattern
inheritance and answer the questions given(a) Give all the possible genotypes of the members 4, 5 and 6 u the pedigree
allow.
(b)
A blood test slows that the individual 14 is a carrier of haemophillia. The
member number 15 has recently married the member number 14 what is the
probability that their first child will be a haemophillic male?
1
3
4
10
11
2
5
6
7
8
12
9
13
14
15
Q.20- Can a child have blood group ‘O’ if his parents have blood groups ‘A’ and ‘B’ explain.
Q.21- Match the followingColumn- A
Column- B
(a) Morgan and Castle
(i) Sex linkage
(b) Morgan
(ii) Transition/Transversion
(c) Calvin Bridges
(iii) Chromosome theory of linkage
(d) Gene mutation
(iv) Aneuploid /polyploidy
(e) Chromosome aberration
(v) Genic balance theory of sex
(f) Deletions/ Insertions
(vi) determination
Q.22- Match the followingColumn- A
(a) ABC Blood groups in man
(b) Skin colour in man
(c)
Pleiotropy
(d) Law of segregation
(e) Law of independent assortment
Column- B
(i) Polygenic Inheritance
(ii) Monohybrid cross
(iii) Multiple allelism
(iv) Dihybrid cross 9 : 3 : 3 : 1
(v) Co- dominance
Section- D
Q.23- Sunny was rushed to a nearby hospitals after an accident which caused too much
blood loss. The hospital failed to supply O negative blood for transfusion Ahmed
who was attending a patient heard about the situation and agreed to donate blood
as he had same blood group. Sunny’s mother initially refused but was later
convinced by her daughter’s view.
(i)
(ii)
(iii)
(iv)
Why can’t O positive blood be transfused into sunny’s body?
What is the genetic basis of blood group ‘inheritance’?
Human blood grouping is an example of ?
What values do you find in Sunny’s sister and Ahmed.
Section- C
Q.24- Workout a typical memdelian dihybrid cross and the law that he derived from it.
Q.25- Inheritance pattern of flower colour in garden pea plant and snapdragon differs ?
Why is this difference observed? Explain showing the crosses upto F2 generations.
Q.26- Differentiate between the following
(i) Dominance and Recessive
(ii) Homozygous and Heterozygous
(iii) Monohybrid and Dihybrid