Test 24 (Class 11) - Type Bio SCAN (Old NCERT)Contact Number: 8527521718Test 24 (Class 11) - Type Bio SCAN (Old NCERT)Contact Number: 8527521718What is present between ectoderm and endoderm in diploblastic animals?
1. Mesenteron
2. Mesenchyme
3. Mesorchium
4. Mesoglea
Match each item in Column I with one in Column II and select the correct option from the codes given:
|
COLUMN I |
COLUMN II |
||
|
A |
Gonyaulax |
P |
Potato spindle tuber disease |
|
B |
Trypanosoma |
Q |
Red tide |
|
C |
Alternaria |
R |
Early blight of potato |
|
D |
Viroid |
S |
Sleeping sickness |
Codes:
|
A |
B |
C |
D |
|
|
1. |
S |
Q |
P |
R |
|
2. |
S |
Q |
R |
P |
|
3. |
Q |
S |
P |
R |
|
4. |
Q |
S |
R |
P |
In some animal groups, the body is found divided into compartments with at least some organs/origin repeated.
This characteristic feature is named
1. Segmentation
2. Metamerism
3. Metagenesis
4. Metamorphosis
Which one of the following statements about certain given animals is correct?
1. Roundworms(Aschelminthes) are pseudocoelomates
2. Molluscs are acoelomates
3. Insects are pseudocoelomates
4. Flatworms (Platyhelminthes) are coelomates
Gemmae are present in:
1. Some Gymnosperms
2. Some Liverworts
3. Mosses
4. Pteridophytes
Match the following genera with their respective phylum :
| Column I | Column II | ||
| (a) | Ophiura | (i) | Mollusca |
| (b) | Physalia | (ii) | Platyhelminthes |
| (c) | Pinctada | (iii) | Echinodermata |
| (d) | Planaria | (iv) | Coelenterata |
| Options: | (a) | (b) | (c) | (d) |
| 1. | iv | i | iii | ii |
| 2. | iii | iv | i | ii |
| 3. | i | iii | iv | ii |
| 4. | iii | iv | ii | i |
Which of the following is correct about viroids?
1. They have free RNA without protein coat.
2. They have DNA with protein coat.
3. They have free DNA without protein coat.
4. They have RNA with protein coat.
Match the following organism with their respective characteristics:
| Column I | Column II | ||
| (a) | Pila | (i) | Flame cells |
| (b) | Bombyx | (ii) | Comb plates |
| (c) | Pleurobrachia | (iii) | Radula |
| (d) | Taenia | (iv) | Malpighian tubules |
Select the correct option from the following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (ii) | (iv) | (i) |
| 2. | (iii) | (ii) | (i) | (iv) |
| 3. | (iii) | (iv) | (ii) | (i) |
| 4. | (ii) | (iv) | (iii) | (i) |
Mannitol is the stored food in:
1. Chara
2. Porphyra
3. Fucus
4. Gracillaria
Pick up the wrong statement.
| 1. | Cell wall is absent in Animalia. |
| 2. | Protista have photosynthetic and heterotrophic modes of nutrition |
| 3. | Some fungi are edible |
| 4. | Nuclear membrane is present in Monera. |
Given below is the diagram of a bacteriophage. In which one of the options, all the four parts A, B, C and D are correct?
| A | B | C | D | |
| 1. | Sheath | Collar | Head | Tail fibres |
| 2. | Head | Sheath | Collar | Tail fibres |
| 3. | Collar | Tail fibres | Head | Sheath |
| 4. | Tail fibres | Head | Sheath | Collar |
The classification system given by Bentham and Hooker is a/an:
1. Artificial system
2. Natural system
3. Phylogenetic system
4. Useless system
In a moss the sporophyte:
| 1. | is partially parasitic on the gametophyte |
| 2. | produces gametes that give rise to the gametophyte |
| 3. | arises from a spore produced from the gametophyte |
| 4. | manufactures food for itself, as well as for the gametophyte |
Two plants can be conclusively said to belong to the same species if they:
| 1. | can reproduce freely with each other and form seeds |
| 2. | have more than 90 percent similar genes |
| 3. | look similar and possess identical secondary metabolites |
| 4. | have the same number of chromosomes |
Selaginella and Salvinia are considered to represent a significant step towards the evolution of seed habit because:
| 1. | Embryo develops in female gametophyte which is retained on parent sporophyte. |
| 2. | Female gametophyte is free and gets dispersed like seeds. |
| 3. | Female gametophyte lacks archegonia. |
| 4. | Megaspores possess endosperm and embryo surrounded by a seed coat. |
Triticum aestivum and Mangifera indica belong to the same:
I. Order
II. Class
III. Division
1. Only III
2. Both II and III
3. I, II and III
4. None of the given taxonomic categories
Which one of the following matches is correct?
| (a) | Phytophthora | Aseptate Mycelium | Basidiomycetes |
| (b) | Alternaria | Sexual reproduction Absent | Deuteromycetes |
| (c) | Mucor | Reproduction by conjugation | Ascomycetes |
| (d) | Agaricus | Parasitic fungus | Basidiomycetes |
The wheat grain has an embryo with one, large, shield-shaped cotyledon known as:
1. Coleorrhiza
2. Scutellum
3. Coleoptile
4. Epiblast
During the formation of leaves and the elongation of stem, some cells are left behind from the shoot apical meristem and constitute the:
1. Leaf primordium
2. Shoot apical meristematic zone
3. Differentiating vascular tissue
4. Axillary bud
Match the following columns and select the correct option.
| Column I | Column II | ||
| (a) | 6 - 15 pairs of gill slits | (i) | Trygon |
| (b) | Heterocercal caudal fin | (ii) | Cyclostomes |
| (c) | Air Bladder | (iii) | Chondrichthyes |
| (d) | Poison sting | (iv) | Osteichthyes |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (iv) | (ii) | (iii) | (i) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (ii) | (iii) | (iv) | (i) |
Which of the following is the correct floral formula of Liliaceae?
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
The ovary is said to be half inferior in all the following except:
1. Mustard
2. Rose
3. Plum
4. Peach
Which of the following shows whorled phyllotaxy?
1. Mustard
2. China rose
3. Alstonia
4. Calotropis
Sycon belongs to a group of animals, which are best described as:
| 1. | Unicellular or acellular |
| 2. | Multicellular without any tissue organization |
| 3. | Multicellular with a gastrovascular system |
| 4. | Multicellular having tissue organization, but no body cavity |
The technical term used for the androecium in a flower of China rose (Hibiscus rosa-sinensis) is:
| 1. | monadelphous | 2. | diadelphous |
| 3. | polyandrous | 4. | polyadelphous |
Adenine and guanine are:
1. Substituted purines
2. Substituted pyrimidines
3. Deoxyribonucleosides
4. Ribonucleotides
Given below is the diagrammatic sketch of a certain type of connective tissue. Identify the parts labeled A, B, C, and D and select the right option for them:
| Part-A | Part-B | Part-C | Part-D | |
| 1. | Mast cell | Macrophage | Fibroblast | Collagen fibres |
| 2. | Macrophage | Collagen fibres | Fibroblast | Mast cell |
| 3. | Mast cell | Collagen fibres | Fibroblast | Macrophage |
| 4. | Macrophage | Fibroblast | Collagen fibres | Mast cell |
| 1. | Bronchioles and Fallopian tubes |
| 2. | Bile duct and Bronchioles |
| 3. | Fallopian tubes and Pancreatic duct |
| 4. | Eustachian tube and salivary duct |
When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as :
1. Sub-metacentric
2. Acrocentric
3. Metacentric
4. Telocentric
Mosaic vision in Periplaneta is characterized by:
1. High sensitivity but low resolution
2. Low sensitivity but high resolution
3. High sensitivity and high resolution
4. Low sensitivity and low resolution
Large, empty colourless cells of the adaxial epidermis along the veins of grass leaves are:
| 1. | Lenticels | 2. | Guard cells |
| 3. | Bundle sheath cells | 4. | Bulliform cells |
Match List - I with List - II
| List -I | List - II | ||
| a. | Cristae | i. | Primary constriction in chromosome |
| b. | Thylakoids | ii. | Disc-shaped sacs in Golgi apparatus |
| c. | Centromere | iii. | Infoldings in mitochondria |
| d. | Cisternae | iv. | Flattened membranous sacs in stroma of plastids |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (i) | (iv) | (iii) | (ii) |
Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitation of communication with neighbouring cells via rapid transfer of ions and molecules.
1. Adhering junctions and Tight junctions, respectively.
2. Adhering junctions and Gap junctions, respectively.
3. Gap junctions and Adhering junctions, respectively.
4. Tight junctions and Gap junctions, respectively.
Closed vascular bundles lack:
1. Ground tissue
2. Conjuctive tissue
3. Cambium
4. Pith
The concept of "Omnis cellula-e-cellula" regarding cell division was first proposed by:
1. Aristotle
2. Rudolf Virchow
3. Theodor Schwann
4. Schleiden
The organelles that are included in the endomembrane system are:
| 1. | Golgi complex, Mitochondria, Ribosomes, and Lysosomes |
| 2. | Golgi complex, Endoplasmic reticulum, Mitochondria, and Lysosomes |
| 3. | The endoplasmic reticulum, Mitochondria, Ribosomes, and Lysosomes |
| 4. | The endoplasmic reticulum, Golgi complex, Lysosomes, and Vacuoles |
The chemical formula can be of:
1. Palmitic acid
2. Arachidonic acid
3. Cholesterol
4. Lecithin
You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?
1. Secondary xylem
2. Secondary phloem
3. Protoxylem
4. Cortical cells
Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth:
| 1. | Pharynx → Oesophagus → Ileum → Crop → Gizzard → Colon → Rectum |
| 2. | Pharynx → Oesophagus → Crop → Gizzard → Ileum → Colon → Rectum |
| 3. | Pharynx → Oesophagus → Gizzard → Crop → Ileum → Colon → Rectum |
| 4. | Pharynx → Oesophagus → Gizzard → Ileum → Crop → Colon → Rectum |
It can be very difficult to estimate the age of a tree with the help of annual rings in case it is located in:
1. Temperate evergreen
2. Temperate deciduous
3. Tropical evergreen
4. Tropical deciduous
A cell without a nucleus:
1. can only be a prokaryotic cell
2. cannot undergo cell division
3. can have DNA
4. will not be able to survive
Which one of the following structures between two adjacent cells is an effective transport pathway?
1. Plasmodesmata
2. Plastoquinones
3. Endoplasmic reticulum
4. Plasmalemma
If you are provided with the root tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?
| 1. | Telophase | 2. | Anaphase |
| 3. | Prophase | 4. | Metaphase |
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
| 1. | Enzymes are denatured at high temperatures but in certain exceptional organisms they are effective even at temperatures 80º - 90ºC |
| 2. | Enzymes are highly specific |
| 3. | Most enzymes are proteins but some are lipids |
| 4. | Enzymes require optimum pH for maximal activity |
Match the following with respect to meiosis:
| Column I | Column II | ||
| (a) | Zygotene | (i) | Terminalization |
| (b) | Pachytene | (ii) | Chiasmata |
| (c) | Diplotene | (iii) | Crossing over |
| (d) | Diakinesis | (iv) | Synapsis |
Select the correct option from the following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | iv | iii | ii | i |
| 2. | i | ii | iv | iii |
| 3. | ii | iv | iii | i |
| 4. | iii | iv | i | ii |
Floridian starch has structure similar to :
1. Amylopectin and glycogen
2. Mannitol and algin
3. Laminarin and cellulose
4. Starch and cellulose
Crossing over that results in genetic recombination in higher organisms occurs between:
1. Non-sister chromatids of a bivalent
2. Two daughter nuclei
3. Two different bivalents
4. Sister chromatids of a bivalent
A somatic cell that has just completed the S-phase of its cell cycle, as compared to a gamete of the same species has:
| 1. | twice the number of chromosomes and twice the amount of DNA |
| 2. | the same number of chromosomes but twice the amount of DNA |
| 3. | twice the number of chromosomes and four times the amount of DNA |
| 4. | four times the number of chromosomes and twice the amount of DNA |
Identify the incorrect statement:
1. The protein portion of enzymes is called as a holoenzyme
2. Haem is the prosthetic group in peroxidase and catalase
3. Co-enzymes are organic compounds that have a transient association with the protein part of the enzyme
4. Catalytic activity is lost when the co-factor is removed from the enzyme
Which of the following are not secondary metabolites in plants?
1. Vinblastin, curcumin
2. Rubber, gums
3. Morphine, codeine
4. Amino acids, glucose