Test 12 (Class 11) - Type Bio SCAN (Old NCERT)Contact Number: 8527521718Test 12 (Class 11) - Type Bio SCAN (Old NCERT)Contact Number: 8527521718Which of the following algae contains mannitol as reserve food material?
| 1. | Volvox | 2. | Ulothrix |
| 3. | Ectocarpus | 4. | Gracilaria |
Which one of these is not a eukaryote?
1. Euglena
2. Anabaena
3. Spirogyra
4. Agaricus
The fertilization and development is:
1. internal and indirect in Ctenophora
2. internal and indirect in Porifera
3. external and direct in Aschelminthes
4. external and direct in Echinodermata
Animals with bilateral symmetry have all the following except:
1. Anterior and posterior end
2. Right and left half
3. Dorsal and ventral surface
4. Oral and aboral surface
Phenetic classification is based on:
1. The ancestral lineage of existing organisms
2. Observable characteristics of existing organisms
3. Dendrograms based on DNA characteristics
4. Sexual characteristics
Match the name of the animal (Column I), with one characteristic (Column II), and the phylum/class (Column III) to which it belongs:
| Column I | Column II | Column III | |
| 1. | Ichthyophis | terrestrial | Reptilia |
| 2. | Limulus | body covered by chitinous exoskeleton | Pisces |
| 3. | Adamsia | radially symmetrical | Porifera |
| 4. | Petromyzon | ectoparasite | Cyclostomata |
Black rust of wheat is caused by:
1. Puccinia
2. Ustilago
3. Albugo
4. Phytophthora
Metagenesis refers to?
| 1. | The presence of different morphic forms |
| 2. | Alternation of generation between asexual and sexual phases of an organism |
| 3. | Occurrence of a drastic change in the form during post-embryonic development |
| 4. | Presence of a segmented body and parthenogenic mode of reproduction |
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?
1. Diplontic life cycle
2. Members of kingdom plantae
3. Mode of Nutrition
4. Multiplication by fragmentation
Which of the following shows coiled RNA strand and capsomeres?
| 1. | Poliovirus | 2. | Tobacco mosaic virus |
| 3. | Measles virus | 4. | Retrovirus |
Which one of the following statements about viruses is correct:
1. Viruses possess their own metabolic system
2. All viruses contain both RNA and DNA
3. Viruses are obligate parasites
4. Nucleic acid of viruses is known as capsid
Which of the following statements is correct?
| 1. | Organisms that depend on living plants are called saprophytes. |
| 2. | Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells. |
| 3. | The fusion of two cells is called Karyogamy. |
| 4. | Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy. |
In angiosperms, one of the male gametes fuses with the secondary nucleus to produce:
1. Endosperm
2. Zygote
3. Embryo
4. Primary endosperm nucleus
ICBN stands for:
1. Indian Congress of Biological Names
2. International Code of Botanical Nomenclature
3. Indian Code of Botanical Nomenclature
4. International Congress of Biological Names
Which one of the following is considered important in the development of seed habit?
| 1. | Dependent sporophyte | 2. | Heterospory |
| 3. | Halplontic life cycle | 4. | Free-living gametophyte |
1. Cuttlefish – Mollusca, a class
2. Humans – Primate, the family
3. Housefly – Musca, an order
4. Tiger – Tigris, the species
A location with luxuriant growth of lichens on the trees indicates that the:
1. Trees are very healthy
2. Trees are heavily infested
3. Location is highly polluted
4. Location is not polluted
It is not always easy to differentiate between a leaflet and a leaf but the following criteria may be helpful in differentiating between the two:
I. Buds are found in the axils of leaves but not in the axils of leaflets
II. Leaves extend from the stem in various planes but leaflets of a given leaf all lie in the same plane
III. Leaves always have a petiole while leaflets are always present on a common axis, rachis
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Whorled, simple leaves with reticulate venation are present in:
| 1. | Alstonia | 2. | Calotropis |
| 3. | Neem | 4. | China Rose |
Which of the following options correctly represent the characteristic features of phylum Annelida?
| 1. | Triploblastic, unsegmented body, and bilaterally symmetrical. |
| 2. | Triploblastic, a segmented body, and bilaterally symmetrical. |
| 3. | Triploblastic, flattened body, and acoelomate condition. |
| 4. | Diploblastic, mostly marine and radially symmetrical. |
Consider the following four statements A, B, C & D and select the right option for two correct statements:
| (A) | In vexillary aestivation, the large posterior petal is called standard, two lateral ones are wings and two small anterior petals are termed keel |
| (B) | The floral formula for Liliaceae is  |
| (C) | In pea flower the stamens are monadelphous |
| (D) | The floral formula for Solanaceae is  |
The correct statements are:
1. A and B
2. B and C
3. C and D
4. A and C
The lengths of the filaments in the anther within a flower are variable in:
1. China rose
2. Pea
3. Mustard
4. Citrus
Match the placental types Column-I with their examples Column-II.
| Column-I | Column-II | ||
| (a) | Basal | (i) | Mustard |
| (b) | Axile | (ii) | China rose |
| (c) | Parietal | (iii) | Dianthus |
| (d) | Free central | (iv) | Sunflower |
Choose the correct answer from the following options:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iv) | (ii) | (i) | (iii) |
| 4. | (iii) | (iv) | (i) | (ii) |
Match List - I with List - II
| List-I | List-II |
| (a) Metamerism | (i) Coelenterata |
| (b) Canal system | (ii) Ctenophora |
| (c) Comb Plates | (iii) Annelida |
| (d) Cnidoblasts | (iv) Porifera |
Choose the correct answer from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | iii | iv | ii | i |
| 2. | iv | i | ii | iii |
| 3. | iv | iii | i | ii |
| 4. | iii | iv | i | ii |
Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?
1. Five
2. Six
3. Three
4. Four
The plasma membrane consists mainly of:
1. phospholipids embedded in a protein bilayer
2. proteins embedded in a phospholipid bilayer
3. proteins embedded in a polymer of glucose molecules
4. proteins embedded in a carbohydrate bilayer
Mast cells secrete:
1. hippurin
2. myoglobin
3. histamine
4. haemoglobin
Cockroach is uricotelic. Which of the following is not an excretory structure in cockroach?
1. Flame cells
2. Urecose glands
3. Fat body
4. Malpighian tubules
The endomembrane system of a eukaryotic cell does not include:
1. Endoplasmic reticulum
2. Golgi apparatus
3. Lysosome
4. Mitochondria
Match List I with List II
| List I | List II | ||
| (a). | Cells with active cell division capacity |
(i). | Vascular tissues |
| (b). | Tissue having all cells similar in structure and function |
(ii). | Meristematic tissue |
| (c). | Tissue having different types of cells |
(iii). | Sclereids |
| (d). | Dead cells with highly thickened walls and narrow lumen |
(iv). | Simple tissue |
Select the correct answer from the options given below:
| Options: | (a). | (b). | (c). | (d). |
| 1. | (i). | (ii). | (iii). | (iv). |
| 2. | (iii). | (ii). | (iv) | (i). |
| 3. | (ii). | (iv). | (i). | (iii). |
| 4. | (iv). | (iii). | (ii). | (i). |
Phloem in gymnosperms lacks:
1. Both sieve tubes and companion cells
2. Albuminous cells and sieve cells
3. Sieve tubes only
4. Companion cells only
The functions of mesosomes include all the following except:
1. DNA replication
2. Cell wall formation
3. Respiration
4. Photosynthesis
Match the following cell structure with its characteristic feature:
| Column I | Column II | ||
| (a) | Tight junctions | (i) | Cement neighboring cells together to form a sheet |
| (b) | Adhering junctions | (ii) | Transmit information through chemicals to another cell |
| (c) | Gap junctions | (iii) | Establish a barrier to prevent leakage of fluid across epithelial cells |
| (d) | Synaptic junctions | (iv) | Cytoplasmic channels to facilitate communication between adjacent cells |
Select the correct option from the following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iv) | (i) | (iii) |
| 2. | (iv) | (ii) | (i) | (iii) |
| 3. | (iii) | (i) | (iv) | (ii) |
| 4. | (iv) | (iii) | (i) | (ii) |
Heartwood differs from sapwood in:
1. presence of rays and fibres
2. absence of vessels and parenchyma
3. having dead and non-conducting elements
4. being susceptible to pests and pathogens
Who proposed the fluid mosaic model of plasma membrane?
1. Camillo Golgi
2. Schneiden and Schwann
3. Singer and Nicolson
4. Robert Brown
Which one of the following structural formulae of two organic compounds are correctly identified along with its related function?
1. A- Triglyceride – a major source of energy
2. B- Uracil – a component of DNA
3. A- Lecithin – a component of cell membrane
4. B- Adenine – a nucleotide that makes up nucleic acids
What cell secrets the myelin sheath around the axolemma in central nervous system?
1. Schwann cell
2. Oligodendrocyte
3. Astrocyte
4. Microglial cell
Specialised epidermal cells surrounding the guard cells are called:
1. Lenticels
2. Complementary cells
3. Subsidiary cells
4. Bulliform cells
Goblet cells of alimentary canal are modified from:
| 1. | Columnar epithelial cells | 2. | Chondrocytes |
| 3. | Compound epithelial cells | 4. | Squamous epithelial cells |
In the given diagram of centriole something is wrong! What is it?
1. Radial spokes: all must attach to the central sheath
2. Central sheath: must be continuous
3. Interdoublet bridge: should not be present
4. Everything: it is not centriole
The fruit fly has 8 chromosomes (2n) in each cell. During the interphase of mitosis, if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after the S phase?
| 1. | 4 | 2. | 32 |
| 3. | 8 | 4. | 16 |
Match List -I with List - II.
| List-I | List-II | ||
| (a) | Protein | I. | C-C double bonds |
| (b) | Unsaturated fatty acid | II. | Phosphodiester bonds |
| (c) | Nucleic acid | III. | Glycosidic bonds |
| (d) | Polysaccharides | IV. | Peptide bonds |
Choose the correct answer from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | II | I | IV | III |
| 2. | IV | III | I | II |
| 3. | IV | I | II | III |
| 4. | I | IV | III | II |
In the somatic cell cycle:
| 1. | DNA replication takes place in S-phase |
| 2. | A short interphase is followed by a long mitotic phase |
| 3. | \(G_2\) phase follows the mitotic phase |
| 4. | In the \(G_1\) phase, DNA content is double the amount of DNA present in the original cell |
Identify the substances having a glycosidic bond and peptide bond, respectively in their structure:
1. Glycerol, trypsin
2. Cellulose, lecithin
3. Inulin, insulin
4. Chitin, cholesterol
Which of the following stages of meiosis involves division of centromere?
1. Anaphase II
2. Telophase II
3. Metaphase I
4. Metaphase II
Crossing over takes place between which chromatids and in which stage of the cell cycle?
| 1. | Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I. |
| 2. | Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I. |
| 3. | Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I. |
| 4. | Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I. |
Consider the following statements:
| A: | A coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group |
| B: | A complete catalytic enzyme with its bound prosthetic group is called apoenzyme |
Select the correct option
1. (A) is false but (B) is true
2. Both (A) and (B) are true
3. (A) is true but (B) is false
4. Both (A) and (B) are false
Following are the statements with reference to 'lipids'.
| (a) | Lipids having only single bonds are called unsaturated fatty acids. |
| (b) | Lecithin is a phospholipid. |
| (c) | Trihydroxy propane is glycerol. |
| (d) | Palmitic acid has 20 carbon atoms including carboxyl carbon. |
| (e) | Arachidonic acid has 16 carbon atoms. |
You have to choose the correct statements out of the five given above. Choose the correct answer from the options given below:
1. (b) and (c) only
2. (b) and (e) only
3. (a) and (b) only
4. (c) and (d) only