As a group the most extensive metabolic diversity is shown by:
1. Bacteria | 2. Protista |
3. Fungi | 4. Animals |
1. | Red algae | 2. | Green algae |
3. | Brown algae | 4. | Blue green algae |
A bud is present in the axil of:
I. petiole in simple leaves
II. petiole in compound leaves
III. leaflets of the compound leaves
1. Only I and II | 2. Only I and III |
3. Only II and III | 4. I, II and III |
Match the following and choose the correct option:
A. Family | i. tuberosum |
B. Kingdom | ii. Polynomiales |
C. Order | iii. Solanum |
D. Species | iv. Plantae |
E. Genus | v. Solanacea |
i | ii | iii | iv | v | |
1. | D | C | E | B | A |
2. | E | D | B | A | C |
3. | D | E | B | A | C |
4. | E | C | B | A | D |
1. Ascidia | 2. Amphioxus |
3. Petromyzon | 4. Exocoetus |
1. | Flightless bird | 2. | Limbless amphibian |
3. | Viviparous mammal | 4. | Economically important insect |
In gymnosperms, the ovules are:
1. not enclosed by any ovary wall before and after fertilization
2. not enclosed by any ovary wall only before fertilization
3. not enclosed by any ovary wall only after fertilization
4. enclosed by an ovary wall before and after fertilization
Isolated metabolic reaction in a cell-free system:
1. Can be demonstrated
2. Is not a living reaction
3. Is a living thing
4. Is faster than in the living cell
The given figure represents:
1. Equisetum, a horsetail where A is macrophyll and B is microphyll
2. Sphagnum, peat moss where A is microphyll and B is macrophyll
3. Equisetum, a horsetail where A is archegonial branch and B is antheridial branch
4. Sphagnum, peat moss where A is archegonial branch and B is antheridial branch
Potato Spindle Tuber Disease is caused by a pathogen that is:
1. | A nucleocapsid |
2. | A low molecular weight free RNA |
3. | An abnormally folded protein |
4. | A protozoan |
Protists that do not include any photosynthetic members are:
I. Euglenoids
II. Slime moulds
III. Protozoans
1. | Only I | 2. | Only II |
3. | Both II and III | 4. | I, II and III |
Halophiles are archaebacteria adapted to extreme:
1. | Hot habitats | 2. | Saline habitats |
3. | Marshy habitats | 4. | Cold habitats |
1. | Ectoderm | 2. | Mesoderm |
3. | Endoderm | 4. | Gastroderm |
1. | Frond | 2. | Stipe |
3. | Holdfast | 4. | Rhizoid |
Statement 1: | Hemichordates were earlier considered as a sub-phylum under Phylum Chordata but are now placed separately in a phylum under non-Chordata. |
Statement 2: | Hemichordates have a rudimentary structure in the collar region called stomochord, a structure homologous to the notochord. |
1. | Both Statement 1 and Statement 2 are correct but Statement 2 does not explain Statement 1. |
2. | Statement 1 is correct and Statement 2 is incorrect. |
3. | Both Statement 1 and Statement 2 are incorrect. |
4. | Both Statement 1 and Statement 2 are correct and Statement 2 explains Statement 1. |
1. Only I is correct | 2. Only II is correct |
3. Both are correct | 4. Both are incorrect |
What is not true regarding sexual reproduction in basidiomycetes?
1. | Sex organs are well developed |
2. | Plasmogamy is brought about by fusion of two vegetative or somatic cells of different strains or genotypes |
3. | Karyogamy and meiosis take place in basidium, producing four basidiospores |
4. | Basidiospores are produced exogenously on the basidium |
Scutellum is:
1. | shield shaped cotyledon in monocotyledons |
2. | protein layer in the outer endosperm in monocotyledons |
3. | starchy endosperm of dicotyledons |
4. | stony hard seed coat in some seeds |
In a monocot stem:
1. Each vascular bundle is surrounded by a sclerenchymatous bundle sheath
2. Ground tissue is very poorly developed
3. Vascular bundles are conjoint and open with water containing cavities
4. Phloem parenchyma is present
The vascular bundles in a dicot stem are:
1. conjoint, open with endarch protoxylem
2. conjoint, closed with endarch protoxylem
3. conjoint, open with exarch protoxylem
4. conjoint, closed with exarch protoxylem
Match the plants with the parts where sclereids are commonly found in them:
Plants |
Parts |
A. Nuts |
a. Fruit walls |
B. Sapota |
b. Pulp of fruit |
C. Legumes |
c. Seed coat |
D. Tea |
d. Leaves |
Codes
A | B | C | D | |
1. | a | b | c | d |
2. | b | a | d | c |
3. | b | d | c | a |
4. | d | c | b | a |
The apical meristems in the plants:
1. occur at the tips of both roots and shoots and produce primary tissues
2. occur at the tip of root and base of the stem and produce secondary tissues
3. occur at the base of root and tip of the stem and produce primary tissues
4. occur at the tips of both roots and shoots and produce secondary tissues
Epigynous flower is seen in:
1. | China rose | 2. | Brinjal |
3. | Mustard | 4. | Ray florets of sunflower |
1. Glycerol 2. Fatty acid 3. Sphingosine 4. Cerebroside |
1. | A heterocyclic compound | 2. | A monosaccharide |
3. | A phosphate | 4. | A saturated fatty acid |
Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I | Column II | ||
(a) | Alkaloid | (i) | Abrin |
(b) | Toxin | (ii) | Morphine |
(c) | Lectin | (iii) | Vinblastin |
(d) | Drug | (iv) | Concanavalin A |
(a) | (b) | (c) | (d) | |
1. | (i) | (ii) | (iii) | (iv) |
2. | (ii) | (i) | (iv) | (iii) |
3. | (ii) | (i) | (iii) | (iv) |
4. | (i) | (ii) | (iv) | (iii) |
Which of the following is not a part of male cockroach reproductive system?
1. Phallic gland
2. Collaterial gland
3. Mushroom gland
4. Phallomeres
The genital pouch in female cockroach is formed by:
1. 7th, 8th and 9th tergites
2. 7th, 8th and 9th sternites
3. 8th, 9th and 10th tergites
4. 8th, 9th and 10th sternites
Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells?
1. | Matthias Shcleiden | 2. | Theodore Schwann |
3. | J. B. S. Haldane | 4. | Rudolph Virchow |
Identify the appendage present on the surface of some bacterial cells that help attach them to rocks in streams and also to the host tissues:
1. | Flagella | 2. | Pili |
3. | Fimbriae | 4. | Cilia |
What type of epithelial cell junctions facilitate the cells to communicate with each other?
1. Gap junctions
2. Adhering junctions
3. Tight junctions
4. Plasmodesmata
Many organic substances are negatively charged e.g., acetic acid, while others are positively charged e.g., ammonium ion. An amino acid under certain conditions would have both positive and negative charges simultaneously in the same molecule. Such a form of amino acid is called
1. Positively charged form | 2. Negatively charged form |
3. Neutral form | 4. Zwitter ionic form |
I: | mainly consists of calcium carbonate |
II: | holds or glues the different neighbouring cells together |
III: | is not traversed by plasmodesmata |
1. | Only II is correct |
2. | Only I is incorrect |
3. | I, II and III are incorrect |
4. | Only II and III are correct |
Which one of the following types of cell is involved in making of the inner walls of large blood vessels?
1. Cuboidal epithelium
2. Columnar epithelium
3. Squamous epithelium
4. Stratified epithelium
I. | GLUT-4 | Enables glucose transport out of the cells |
II. | Collagen | Most abundant protein in animal world |
III. | RuBisCO | Most abundant protein in the whole of the biosphere |
1. | Only I | 2. | Only I and II |
3. | Only I and III | 4. | Only II and III |
The number of correct statements regarding Golgi apparatus amongst the given statements will be:
I. The concave trans surface is the maturing face
II. The cis and trans faces are entirely different but interconnected
III. It remains in close association with the endoplasmic reticulum
IV. Site of formation of glycoproteins and glycolipids
1. 1 | 2. 2 |
3. 3 | 4. 4 |
Spindle fibers are attached to the chromosome in the region of:
1. | Centrosome | 2. | Chromomere |
3. | Chromonema | 4. | Kinetochore |
Which of the following categories of enzyme classification are correctly matched?
EC 1 | Oxidoreductases: catalyze oxidation/reduction reactions |
EC 2 | Hydrolases: catalyze the hydrolysis of various bonds |
EC 3 | Transferases: transfer a functional group (e.g. a methyl or phosphate group) |
EC 4 | Lyases: cleave various bonds by means other than hydrolysis and oxidation |
EC 5 | Isomerases: catalyze isomerization changes within a single molecule |
EC 6 | Ligases: join two molecules with covalent bonds. |
What level of protein structure is shown in the given diagram?
1. Primary | 2. Secondary |
3. Tertiary | 4. Quaternary |
A ribbon-like structure consisting of three protein components and extending across the region of synapsed chromosomes during the prophase of meiosis, is called:
1. | Phragmoplast | 2. | Phragmosome |
3. | Synaptonemal complex | 4. | Recombination nodule |
During which stage of mitosis do the following events occur?
I. Centromeres split and chromatids separate
II. Chromatids move to opposite poles
1. | Prophase | 2. | Metaphase |
3. | Anaphase | 4. | Telophase |
In meiosis:
1. A single round of DNA replication is followed by two sequential divisions with chromosome number and DNA content getting reduced twice
2. A single round of DNA replication is followed by two sequential divisions with chromosome number getting reduced twice and DNA content getting reduced once
3. A single round of DNA replication is followed by two sequential divisions with chromosome number getting reduced once and DNA content getting reduced twice
4. A single round of DNA replication is followed by two sequential divisions with chromosome number and DNA content getting reduced once
The phase of the cell cycle during which DNA replication takes place is:
1. G1 phase | 2. S phase |
3. G2 phase | 4. M phase |