Test 3 (Class 11) - Type Recall (Old NCERT)

Biology 1 - Section A

1.

In the given diagram of the green alga Chara, the parts labeled A and B respectively are called :

1. Nucule and Globule
2. Globule and Nucule
3. Antheridium and Archegonium
4. Archegonium and Antheridium

2.

Though all four features shown in the diagram of a generalized chordate appear at some point during development, they are actually named for:

1.	A	2.	B
3.	C	4.	D

3.

All living organisms are linked to one another because
1. They have common genetic material of the same type
2. They share common genetic material but to varying degrees
3. All have common cellular organization
4. All of the above

4.

Consider the following statements:

I:	Lion, leopard and tiger belong to same genus.
II:	Lion, leopard, tiger and cats belong to same family.
III:	Lion, leopard, tiger, cats and dogs belong to same order.

This implies that:

1.	Cats and dogs are more closely related to each other than cats and leopards
2.	Lions share maximum characteristics with dogs
3.	Lion, leopard and tiger are capable of interbreeding and producing fertile offspring
4.	Lion, leopard, tiger, cats and dogs may belong to the same class in taxonomic hierarchy

5. Identify the incorrect statement regarding classification of plants given by George Bentham and Joseph Dalton Hooker:

1.	It is a natural system of classification.
2.	It totally disregarded the external characters and did not include them to classify plants.
3.	It used internal features like structure, anatomy, embryology and phytochemistry.
4.	It was based on natural affinities among the organisms.

6.

The disease caused by prions in humans is known as:
1. Bovine spongiform encephalopathy
2. Scrapie
3. CJD [Creutzfeldt Jakob Disease]
4. Infectious mononucleosis

7.

Which of the following is not a feature of the members of the class Basidiomycetes?
1. Branched and septate mycelium
2. Asexual spores are generally not formed
3. Vegetative reproduction not seen
4. Dikaryon stage commonly seen

8. The given figure represents the life cycle of a typical:

1.	Gymnosperm	2.	Angiosperm
3.	Bryophyte	4.	Pteridophyte

9. Match each item in Column I with one in Column II and select the correct match from the codes given:

	Column I		Column II
A.	Spongilla	P.	Sea-fan
B.	Euspongia	Q.	Brain coral
C.	Gorgonia	R.	Fresh Water sponge
D.	Meandrina	S.	Sea-pen
E.	Pennatula	T.	Bath sponge

Codes:

	A	B	C	D	E
1.	T	R	P	Q	S
2.	R	T	P	Q	S
3.	T	R	Q	S	P
4.	R	T	S	P	Q

10.

Identify the parts labeled as 1, 2 and 3 in prothallus of the fern:

	A	B	C
1.	Archegonium	Antheridium	Multicellular rhizoids
2.	Antheridium	Archegonium	Multicellular rhizoids
3.	Archegonium	Antheridium	Unicellular rhizoids
4.	Antheridium	Archegonium	Unicellular rhizoids

11.

Identify the incorrect statement regarding cyclostomes:

1.	Lampreys have direct development, but Hagfishes go through a larval stage followed by metamorphosis into a juvenile form.
2.	Unlike jawed vertebrates, which have three semicircular canals in each inner ear, lampreys have only two and hagfishes just one.
3.	The hagfish blood is isotonic with seawater, while lampreys appear to use the same gill-based mechanisms of osmoregulation as marine teleosts.
4.	Both hagfishes and lampreys have a single gonad.

12.

With respect to fungal sexual cycle, choose the correct sequence of events
1. Karyogamy, Plasmogamy and Meiosis
2. Meiosis, Plasmogamy and Karyogamy
3. Plasmogamy, Karyogamy and Meiosis
4. Meiosis, Karyogamy and Plasmogamy

13.

Identify the incorrect statement regarding true bacteria?

1.	As a group, they exhibit maximum metabolic diversity.
2.	Chemosynthetic autotrophic bacteria play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur.
3.	Heterotrophic bacteria are the most abundant in nature.
4.	Bacteria reproduce mainly by fission but sometimes under favourable conditions, they produce spores.

14.

Both stem tendrils and stem thorns:
1. help the plant to climb
2. develop from axillary buds
3. protect plants from browsing animals
4. can be used in vegetative propagation

15. How many of the given statements regarding various modifications in leaves are correct?

I.	Leaves are modified into tendrils for climbing as in pea.
II.	Leaves are modified into spines for defence as in cacti.
III.	The leaves of onion and garlic store food.
IV.	In Australian acacia, petioles expand, become green and synthesize food.
V.	The trapping structure of venus fly trap and pitcher of pitcher plant are modified leaves.

1.	2	2.	3
3.	4	4.	5

16. Consider the following statements regarding roundworms:

Statement I:	Alimentary canal is complete with a well-developed muscular pharynx.
Statement II:	An excretory tube removes body wastes from the body cavity through the excretory pore.
Statement III:	They are dioecious and males are longer than females.

The incorrect statement is/are:

1.	Only Statement II
2.	Only Statement III
3.	Only Statement I and Statement II
4.	Only Statement II and Statement III

17.

The given figure shows the architecture of the cell wall of:

1. Archaebacteria
2. Gram positive bacteria
3. Diatoms
4. Dinoflagellates

Biology 1 - Section B

18. What is incorrect regarding secondary growth in dicot roots?
1. Cambial ring formed is wavy in the beginning and later becomes circular
2. Cambial ring is completely secondary in origin
3. Periderm originates from the cortex [extra-stelar]
4. Lenticels on periderm are not very prominent

19.

Ovary is one chambered but it becomes two chambered due to the formation of a false septum in:

1.	Mustard and Argemone	2.	Argemone and Dianthus
3.	Mustard and Primrose	4.	Argemone and Primrose

20.

Seed coat is membranous and generally fused with the fruit wall in:

1.	Apple	2.	Maize
3.	Coconut	4.	Castor

21. Members of the Family Solanaceae have:

I:	bicarpellary obliquely placed, syncarpous superior ovary
II:	five stamens thar are epipetalous
III:	valvate aestivation of calyx and corolla

1.	Only I and II	2.	Only I and III
3.	Only II and III	4.	I, II and III

22.

The hypodermis of a dicotyledonous stem:

1.	is parenchymatous and synthesizes and stores food
2.	is collenchymatous and provides mechanical strength to the young stem
3.	is sclerenchymatous and provides mechanical strength to the young stem
4.	is parenchymatous and provides mechanical strength to the young stem

23.

In stems:

1.	the primary xylem is endarch with protoxylem towards the center and metaxylem towards the periphery
2.	the primary xylem is endarch with metaxylem towards the center and protoxylem towards the periphery
3.	the primary xylem is exarch with protoxylem towards the center and metaxylem towards the periphery
4.	the primary xylem is exarch with metaxylem towards the center and protoxylem towards the periphery

24.

In the given diagram, the root apical meristem is represented by the letter:

1. A
2. B
3. C
4. D

25.

What are the structures labelled A, B, C and D respectively, in the given diagram?

1.	Mast cell, Fibroblast, Collagen, Macrophage
2.	Mast cell, Dendritic cell, Collagen, Macrophage
3.	Macrophage, Fibroblast, Elastin, Mast cell
4.	Macrophage, Fibroblast, Collagen, Mast cell

Biology 2 - Section A

26. Consider the given statements regarding some important secondary metabolites:

I:	Morphine is a strong opiate that is found naturally in opium and is mainly used as a pain medication.
II:	Ricin is a toxin and a highly potent toxin produced in the seeds of the castor oil plant.
III:	Concanavalin A is a lectin and is widely used in biology and biochemistry to characterize glycoproteins and other sugar-containing entities on the surface of various cells.
IV:	Vinblastin is an anti-cancer drug typically used with other medications, to treat a number of types of cancer.

1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct

27.

Reserve materials in prokaryotic cells are stored in the cytoplasm in the form of:
1. Non-membrane bound lysosomes
2. Gas vacuoles
3. Chromatophores
4. Inclusion bodies

28.

Smooth muscles are:

1.	Voluntary and striated
2.	Voluntary and unstriated
3.	Involuntary and unstraited
4.	Involuntary and striated

29.

Identify the incorrect statement regarding nucleolus:

1.	Their content is continuous with nucleoplasm
2.	It is site for active rRNA synthesis
3.	Their number is always one per nucleus
4.	Larger nucleoli are present in cells actively carrying out protein synthesis

30. Mesosomes, extensions of plasma membrane into the cell, help bacterium in all the following processes except:
1. Photosynthesis in cyanobacteria
2. Respiration
3. DNA replication
4. Cell wall formation

31. Identify the correct statement regarding the given diagram:

I:	It shows a polysome.
II:	All ribosomes will be translating the same protein.

1.	Only I	2.	Only II
3.	Both I and II	4.	Neither I nor II

32. The double helix model of DNA by Watson and Crick exhibits its:
1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure

33.

Nitrogenous wastes are absorbed and converted to uric acid in cockroach by:

1.	Nephridia	2.	Malpighian tubules
3.	Fat body	4.	Mushroom gland

34.

Consider the given two statements:

I:	Palmitic acid has 16 carbons including the carboxyl carbon.
II:	Arachidonic acid has 20 carbons including the carboxyl carbon.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

35. Identify the incorrectly matched pair:

I:	A	Sister chromatids
II:	B	Q arm of the chromosome
III:	C	Centromere
IV:	D	P arm of the chromosome

1.	Only I and II	2.	Only II and IV
3.	Only I and III	4.	Only I

36.

Consider the given two statements:

Statement I:	A protein is a heteropolymer.
Statement II:	There are 20 types of proteinogenic amino acids and they are linked by peptide bonds to form polypeptides.

1. Only Statement I is correct
2. Only Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect

37. The given diagram:

I:	shows the diagrammatic representation of the ultra-structure of centriole
II:	shows the 9 + 2 arrangement of the axonemal microtubules of cilia/flagella

1. Both I and II are correct
2. only I is correct
3. only II is correct
4. Both I and II are incorrect

38.

When we homogenize any tissues in an acid the acid soluble pool represents

1.	Cytoplasm	2.	Cell membrane
3.	Nucleus	4.	Mitochondria

39.

In animal cells, steroidal hormones are synthesized in the:

1.	Rough endoplasmic reticulum
2.	Smooth endoplasmic reticulum
3.	Golgi apparatus
4.	Lysosomes

40.

Sugars are technically called carbohydrates, referring to the fact that their formulae are only multiples of C(H₂O). Hexose therefore has six carbons, twelve hydrogen and six oxygen atoms. Glucose is a hexose. Choose from among the following another hexose.

1.	Fructose	2.	Erythrose
3.	Ribulose	4.	Ribose

41. In cockroach:

I:	the head is represented by sub-oesophageal ganglion.
II:	the nerve cord is located on the dorsal side of the body.

1. Only II is correct
2. Only I is correct
3. Both I and II are correct
4. Both I and II are incorrect

42. Identify the correct statement(s) regarding the structure of a typical cell membrane:

I:	The lipid component mainly consists of phosphoglycerides.
II:	Peripheral proteins are either lying on the surface of the membrane or partially buried in it.
III:	Carbohydrates are not a component of cell membrane.
IV:	Cholesterol is a lipid and is a part of the cell membranes of animal cells.

1.	Only I	2.	II and III only
3.	I and IV only	4.	II and IV only

Biology 2 - Section B

43.

All the following are significances of mitosis except:
1. Restoration of nuclear/cytoplasmic ratio
2. Growth of living organisms
3. Replacement of lost cells
4. Generation of genetic variation

44.

Identify the incorrect statement regarding cytokinesis:

1.	Animal cells divide by cleavage furrow
2.	Cell plate formation takes place during cytokinesis in plant cells
3.	The cell wall formation in plant cells starts near the existing lateral walls and grows inwards
4.	At cytokinesis, mitochondria and plastids are distributed between daughter cells

45. Consider the given statements:

Statement I:	If the initial number of chromosomes in a cell at G₁ phase is 2N and DNA content is 2C, the number of chromosomes and the content of DNA at the end of the S-phase will be 4N and 4C.
Statement II:	The cell replicates its DNA and doubles its number of chromosomes during the S-phase of the cell cycle.

1.	Statement I is correct; Statement II is correct and Statement II correctly explains Statement I
2.	Statement I is correct; Statement II is correct but Statement II does not correctly explain Statement I
3.	Statement I is incorrect and Statement II is correct
4.	Statement I and Statement II are incorrect

46.

The inhibition of succinic dehydrogenase by malonate is an example of:
1. Non-competitive reversible inhibition
2. Non-competitive irreversible inhibition
3. Competitive inhibition
4. Allosteric inhibition

47.

The beginning of diplotene is recognized by:

I:	dissolution of the synaptonemal complex
II:	the tendency of recombined homologues of bivalents to separate
III:	tetrads becoming clearly visible

1.	Only I and II	2.	Only I and III
3.	Only II and III	4.	I, II, and III

48.

Identify the stage of mitosis shown in the given diagram:

1. Prophase	2. Metaphase
3. Anaphase	4. Telophase

49.

Consider the following key events:

I:	Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements.
II:	Nucleolus, Golgi complex and ER reform.

The stage of mitosis characterized by these key events is:

1.	Prophase	2.	Metaphase
3.	Anaphase	4.	Telophase

50.

The substrate concentration at which the enzyme catalyzed reaction achieves ½ Vmax is its ____ value.

1.	K_m	2.	K_cat
3.	pKa	4.	Q₁₀

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