22339 + Interview Questions in Biology in Class 11 Page 149 InterviewSolution

7401.	Question : What is true of eosinophils ?
Answer» have bilobed NUCLEUS pagocytic in FUNCTION STAIN with BASIC dyes agranulocytes Answer :A

Discussion

7402.	Question : What is true for "lactational amenorrhoea" ? i) It means absence of menstruation ii) Ovulation does not occur during the lactational period iii) Chances of contraception are almost nil upto six months following parturition iv) Side effects are almost nil v) Contraceptive efficiency reduces after the period of intense lactation vi) It is a natural method of contraception
Answer» (ii), (iii), (IV), (V), (vi) (i), (ii), (iii), (iv) (ii), (iii), (iv), (v) (i), (ii), (iii), (iv), (v), (vi) ANSWER :A

Discussion

7403.	Question : What is true for gemmae ?
Answer» Green, unicellular, SEXUAL buds Green, unicellular, ASEXUAL buds YELLOW, multicellular, sexual buds Green, multicellular, asexual buds ANSWER :D

Discussion

7404.	Question : What is true for cyano bacteria
Answer» OXYGENIC with NITROGENASE Oxygenic WITHOUT nitrogenase Non oxygenic with nitrogenase Non oxygenic without nitrogenase ANSWER :A

Discussion

7405.	Question : What is true for Archaebacteria
Answer» All Halophils All photosynthetic All fossils Oldest LIVING beings Answer :D

Discussion

7406.	Question : What is true for all protozoans ? (A) are heterotrophs (B) they are either predators or parasites (C) hey are believed to be primitive relatives of animals (D) all of these
Answer» are heterotrophs they are either PREDATORS or PARASITES they are BELIEVED to be primitive RELATIVES of animals all of these Answer :D

Discussion

7407.	Question : What is true about telophase stage of mitosis?
Answer» Chromosomes lose their identify as discrete elements. Chromosomes duster at opposite spindle poles. Nuclear envelope, nucleouls, Golgi complex and ER reform. All of these Solution :During telophase, the individual chromosomes are no LONGER seen and chromatinmaterial tends to collect in a mass at the two poles. Chromosomes cluster at opposite spindle poles and their identify is LOST as discrete elements. Nuclear envelope ASSEMBLES around the chromosome CLUSTERS. Nucleolus, Golgi complex and ER reform.

Discussion

7408.	Question : What is true about Nereis ,scorpion ,cockroach and silver fish ?
Answer» They all posses dorsal heart CLOSED BLOOD vascular SYSTEM They all belong to the same phylum They all have jointed paired appendages ANSWER :A

Discussion

7409.	Question : What is true about ribosomes?
Answer» The PROKARYOTIC ribosomes are 80s, where "S" stands for sedimentation coefficient These are composed of ribonucleic acid and proteins These are FOUND only in eukaryotic cells These are self-splicing introns of some RNAs Answer :B

Discussion

7410.	Question : What is true about glycogen?
Answer» Is COMPOSED of a mixture of DIFFERENT hexoses Is broken down and SYNTHESISED USING the same enzymes Is broken down by glucagon Is the sugar of the blood Answer :C

Discussion

7411.	Question :What is true about class Insecta?
Answer» two PAIRS of WINGS ONE pair of wings no wing three pairs of LEGS

Discussion

7412.	Question : What is troponin and where is it present?
Answer» Solution :It is a globular PROTEIN PRESENT at regular INTERVALS on TROPOMYOSIN.

Discussion

7413.	Question : What is trinomial system of nomenclature?
Answer» Solution :The system of naming the ORGANISM with three names, generic name, specific name (species) and sub-species name is known as TRINOMIAL system of nomenclature. e.g. CORVUS splendens -INDIAN house crow.

Discussion

7414.	Question : What is trigone?
Answer» Solution :A small triangular AREA in the urinary BLADDER between two OPENINGS of ureters and internal urethral ORIFICE.

Discussion

7415.	Question : What is Translocation ? Explain.
Answer» Solution :In a flowering plant the substances that WOULD need to be transported are water, mineral NUTRIENTS, organic nutrients and plant growth regulators. Over small distances substances move by diffusion and by cytoplasmic streaming supplemented by active transport. Transport over LONGER distances proceeds through the vascular system (the xylem and the phloem). This is called translocation.

Discussion

7416.	Question : What is transformation of bacteria?
Answer» Solution :Transformation is the CHANGE in genetic CONSTITUTION due to picking up of genes of DEAD and INTEGRATING the same in their nucleoids.

Discussion

7417.	Question : What is transition stage ?
Answer» Formation of NEW structure of product Formation of new structure of substrate Formation of new structure of enzyme Formation of new intermediate molecule Answer :B

Discussion

7418.	Question : What is transformation? Name the bacteriologist who described it.
Answer» Solution :(a) Transfer of DNA from one bacterium to another is called TRANSFORMATION. (B) Fredrick GRIFFITH demonstrated the transformation PROCESS .

Discussion

7419.	Question : What is transduction ?
Answer» SOLUTION :Transduction is the process in which there is GENE transfer from one bacterium to ANOTHER by MEANS ofa TEMPERATE bacteriophage.

Discussion

7420.	Question : What is totipotency?
Answer» SOLUTION :The CAPABILITY of a single cell to DEVELOP intowhole ORGANISM.

Discussion

7421.	Question : What is rhizomorph?
Answer» Solution :RHIZOMORPH is a compact structure, which is subterranean and cord like. It is a HYPHAL mass BEARING a GROWING point for peremnation.

Discussion

7422.	Question : What is the importance of C4 plants?
Answer» Solution :They contain special secretory CELLS and FORM INTESTINAL glands that PRODUCE intestinal juice for digestion of FOOD.

Discussion

7423.	Question : What is the volume of air remaining in the lungs after a normal breathing?
Answer» Solution :It is SUM of expiratory RESERVE volume and residual volume,i.e., ERV `+` RV. It is about 2.5 LITRES.

Discussion

7424.	Question : What is the view of Neo lamarckism ?
Answer» SOLUTION :They argued that external CONDITIONS stimulate the somatic cells to produce certain .secretions. which reach the SEX cells through the blood and bring about VARIATIONS in the OFFSPRING.

Discussion

7425.	Question : What is the value of W, X, Y and Z normally (in mmHg) ?
Answer» `{:("W",X,Y,Z),(95,40,45,40):}` `{:("W",X,Y,Z),(95,40,40,45):}` `{:("W",X,Y,Z),(40,45,95,40):}` `{:("W",X,Y,Z),(95,45,40,40):}` Solution :In the TISSUES, exchange of gases occur between the blood and the tissue cells. Blood that reaches the tissue has more particles PRESSURE of `O_(2)` (`PO_(2) = 95` mm Hg), than that already in the tissues (`PO_(2) = 40` mm Hg). Similarly partial pressure of `CO_(2)` is more in tissues (`= 45` mm Hg) than in the blood (`= 40` mm Hg). due to hese difference in paricle pressure of gases, `O_(2)` from diffuse in the tissues and `CO_(2)` from tissue diffuses into the blood. This exchange of gases occurs simultaneously.

Discussion

7426.	Question : What is the use of Smoker?
Answer» SOLUTION :Smoker is used to scare the bees during hive MAINTENANCE and honey COLLECTION by RELEASING smoke.

Discussion

7427.	Question : What is the useofhavingmore thanpigmentsystemmoleculein a photocentre ?
Answer» SOLUTION :It enablesabsorptionof LIGHTOF DIFFERENT WAVELENGTHS.

Discussion

7428.	Question : What is the use of Bee gloves?
Answer» Solution :Bee GLOVES are used by bee KEEPERS for PROTECTING their hands while inspecting the hives.

Discussion

7429.	Question : What is the use of: (a) Uncapping knife (b) Bee brush (c) Queen introducing cage (d) Feeders (e) Honey Extractor (F) Hive Entrance Guard
Answer» Solution :(a) Uncapping knife: Uncapping knife is a long knife which helps in removing the cap from the combs as a first step in HONEY extraction. (b) BEE Brush: Bee brush is a large brush OFTEN employed to brush off bees from honey combs particularly at the time of extraction. (c) Queen introducing cage: Queen introducing cage is a pipe made of wire nets used for keeping the queen for about 24 hours for ACQUAINTANCE with the hive and worker bees. (d) Feeder: Feeder is a basin with sugar syrup covered by grass to feed the bees during drought. season. The grass prevents the bees from sinking into the syrup. (e) Honey Extractor: Honey Extractor is a stainless-steel device which spins the combs rapidly to extract honey. (f) Hive Entrance Guard: Hive Entrance Guard is a device SIMILAR to queen excluder in front of the hive entrance which prevents the escape of queen during warming season.

Discussion

7430.	Question : What is the unique feature of bryophytes ?
Answer» Vascular bundles Medicinal importance GAMETOPHYTE attached to the sporophyte Sporophyte attached to the gametophyte Solution :UNIQUE FEATURE of bryophytes is sporophyte attached to the gametophyte.

Discussion

7431.	Question : What is the type of movable joint present between the atlas and axis?
Answer» Pivot Saddle Hinge Gliding Solution :Pivot joint allows only a rotatory movement of ONE bone on the other, which remains STATIONARY. A rounded end of one bone FITS into a shallow pit of ANOTHER bone. E.g., joint between atlas and axis vertebrae which enables the head to turn from side to side

Discussion

7432.	Question : What is the type of movable joint present between the atlas and axis
Answer» Pivot saddle Hinge Gliding Answer :A

Discussion

7433.	Question : What is the type of movable joint present between the atlas and axis ?
Answer» PIVOT SADDLE Hinge Gliding Answer :A

Discussion

7434.	Question : What is the total time taken to form one cardiac cycle?
Answer» SOLUTION :0.8 SECONDS.

Discussion

7435.	Question : What is the total number of chromosomes found in the tetrad of potato?
Answer» 48 24 36 96 Answer :D

Discussion

7436.	Question : What is the total number of bones present in left pectoral girdle and left arm respectively in human beings.
Answer» ANSWER :LEFT pectoral girdle has 2 bones (1 clavicle and scapula ).Left Arms has 30 bones.

Discussion

7437.	Question : What is the total number of abdominal ganglion in cockroach and upto which segment they are distributed?
Answer» `7,8^(TH)` `8,9^(th)` `9,9^(th)` `6,7^(th)` ANSWER :D

Discussion

7438.	Question : What is the threshold value of glucose in blood which can be reabsorbed from glomerular filtrate?
Answer» SOLUTION :180 mg/1ml of BLOOD.

Discussion

7439.	Question : What is the term used for uptake ofwater by the hemicellulose and pectinmolecules of seed wall?
Answer» SOLUTION :IMBIBITION.

Discussion

7440.	Question : What is the thickness of plasma membrane ?
Answer» SOLUTION :70-100 Å.

Discussion

7441.	Question : What is the term used for the exposure to low temperature for initiation of early flowering ?
Answer» ANSWER :VERNALISATION.

Discussion

7442.	Question : What is the term used for mineral deficiency symptom in plants in which leaves become yellow in different pattern?
Answer» SOLUTION :NECROSIS.

Discussion

7443.	Question : What is the term used for later formed primary xylem?
Answer» SOLUTION :METAXYLEM.

Discussion

7444.	Question :What is the term given to a maximum volume of air a person can breathe in after a forced expiration?
Answer» SOLUTION : VITAL CAPACITY.

Discussion

7445.	Question : What is the term given to high blood pressure ?
Answer» SOLUTION :HYPERTENSION.

Discussion

7446.	Question : What is the term given to a system of membranes sacs present in the cytoplasts having a small bead like structures attached to them?
Answer» SOLUTION :ROUGH ENDOPLASMIC RETICULUM.

Discussion

7447.	Question : What is the symbol for bract ?
Answer» Br Ebr Brl Abrl Answer :B

Discussion

7448.	Question : What is the structure of stomata ?
Answer» Solution :Stomata. The stomata are small apertures PRESENT in the EPIDERMIS of the leaf. Each stoma is bounded by two guard cells. In dicots two guard cellsare kidney shaped while in monocots the guard cells are DUMB bell shaped. The inner WALL of guard cells bordering the aperture are THICKER than the outer wall. In each guard cell there are present chloroplasts.

Discussion

7449.	Question : What is the specific term for cluster of sporangia in Dryopteris ?
Answer» ANSWER :SORI

Discussion

7450.	Question : What is the specific gravity, toxicity and pH range of normal urine?
Answer» Solution :SP. GRAVITY 1.003-1.04 HYPERTONIC, slightly ACIDIC AVERAGE pH of 6.

Discussion

Explore topic-wise InterviewSolutions in .

Question : What is true of eosinophils ?

Question : What is true for gemmae ?

Question : What is true for cyano bacteria

Question : What is true for Archaebacteria

Question : What is true for all protozoans ? (A) are heterotrophs (B) they are either predators or parasites (C) hey are believed to be primitive relatives of animals (D) all of these

Question : What is true about telophase stage of mitosis?

Question : What is true about Nereis ,scorpion ,cockroach and silver fish ?

Question : What is true about ribosomes?

Question : What is true about glycogen?

Question :What is true about class Insecta?

Question : What is troponin and where is it present?

Question : What is trinomial system of nomenclature?

Question : What is trigone?

Question : What is Translocation ? Explain.

Question : What is transformation of bacteria?

Question : What is transition stage ?

Question : What is transformation? Name the bacteriologist who described it.

Question : What is transduction ?

Question : What is totipotency?

Question : What is rhizomorph?

Question : What is the importance of C4 plants?

Question : What is the volume of air remaining in the lungs after a normal breathing?

Question : What is the view of Neo lamarckism ?

Question : What is the value of W, X, Y and Z normally (in mmHg) ?

Question : What is the use of Smoker?

Question : What is the useofhavingmore thanpigmentsystemmoleculein a photocentre ?

Question : What is the use of Bee gloves?

Question : What is the use of: (a) Uncapping knife (b) Bee brush (c) Queen introducing cage (d) Feeders (e) Honey Extractor (F) Hive Entrance Guard

Question : What is the unique feature of bryophytes ?

Question : What is the type of movable joint present between the atlas and axis?

Question : What is the type of movable joint present between the atlas and axis

Question : What is the type of movable joint present between the atlas and axis ?

Question : What is the total time taken to form one cardiac cycle?

Question : What is the total number of chromosomes found in the tetrad of potato?

Question : What is the total number of bones present in left pectoral girdle and left arm respectively in human beings.

Question : What is the total number of abdominal ganglion in cockroach and upto which segment they are distributed?

Question : What is the threshold value of glucose in blood which can be reabsorbed from glomerular filtrate?

Question : What is the term used for uptake ofwater by the hemicellulose and pectinmolecules of seed wall?

Question : What is the thickness of plasma membrane ?

Question : What is the term used for the exposure to low temperature for initiation of early flowering ?

Question : What is the term used for mineral deficiency symptom in plants in which leaves become yellow in different pattern?

Question : What is the term used for later formed primary xylem?

Question :What is the term given to a maximum volume of air a person can breathe in after a forced expiration?

Question : What is the term given to high blood pressure ?

Question : What is the term given to a system of membranes sacs present in the cytoplasts having a small bead like structures attached to them?

Question : What is the symbol for bract ?

Question : What is the structure of stomata ?

Question : What is the specific term for cluster of sporangia in Dryopteris ?

Question : What is the specific gravity, toxicity and pH range of normal urine?