1512 + Interview Questions in Biology in Class 9 Page 12 InterviewSolution

551.	Question : Specific drug is necessary for the specific disease in the treatment for total eradication of the disease.
Answer» Solution :Certain antibiotics are used as drugs for eradication of infectious pathogens, while treating a patient. The pathogens are classified into different groups such as bacteria, virus, fungi, protozoa, worms, etc. In the organisms of each of these groups, certain definite BIOCHEMICAL PROCESSES, essential for their life, GO on. These processes are distinctly specific and differ from those in other groups of organisms. Hence, the drug, that can obstructor inhibit such processes that are specific for that particular group of organisms, should be used. THUS, a specific drug is necessary for the specific disease in the treatment for total eradication of the disease.

Discussion

552.	Question : Soft foot is found in phylum ......... for locomotion.
Answer» SOLUTION :MOLLUSCA

Discussion

553.	Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. Can you write down further characteristics of monocots and dicots on the basis of these observations ?
Answer» Solution :( 1 ) DICOT seed upon germination shows radicle and plumule. Radicle gives rise to future root system while plumule gives rise to SHOOT system. (2) Dicot seeds do not have endosperm except in castor seeds. Most of the pulses are obtained from dicot seeds. (3) Monocot seed has coleoptile which encloses plumule and coleorhizae which encloses radicle. Monocot seed does not display two cotyledons. (4) Monocot seed has endosperm. Most of the cereals that constitute major part of our diet come from monocot PLANTS.

Discussion

554.	Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. How many petals are found in the flower of these plants?
Answer» SOLUTION :Dicot plants have flowers with five PETALS. They have pentamerous symmetry. MONOCOT plants have flowers with three or SIX petals and hence they are SAID to have trimerous symmetry .

Discussion

555.	Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. Do the leaves have parallel or reticulate venation ?
Answer» Solution : Dicot PLANTS have leaves with reticulate VENATION while MONOCOT plants have leaves with PARALLEL venation.

Discussion

556.	Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. Are the roots, taproots or fibrous ?
Answer» Solution :DICOT plants have TAPROOTS while the monocot plants show FIBROUS ROOT system.

Discussion

557.	Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. Do all the seeds break into two nearly equal halves?
Answer» Solution :( 1 ) Seeds such as GREEN gram, PEAS and tamarind break into NEARLY EQUAL two halves. Wheat and maize do not split into two equal halves. (2) The seeds that do split are the dicot seeds and the seeds that cannot be split are the MONOCOT seeds

Discussion

558.	Question : Smooth muscles are found in ______.
Answer» UTERUS ARTERY VEIN all of the above Answer :A

Discussion

559.	Question : Small intestine is seen in the ………………
Answer» ANSWER :ABDOMINAL CAVITY.

Discussion

560.	Question : Small arteries spilt into ……
Answer» Answer :CAPILLARIES are the THIN vessels that connect VEINS and arteries TOGETHER.

Discussion

561.	Question : Skin of reptilians are smooth and moist.
Answer» Solution :Their BODY is covered with HOMY epidermal SCALES.

Discussion

562.	Question : Skates are …………. Fishes.
Answer» ANSWER :CARTILAGINOUS

Discussion

563.	Question : Short duration plants reduce the cost of crop production.
Answer» Solution :Short durations ALLOW FARMERS to grow multiple ROUNDS of crops in a year. Therefore, short duration plants reduce the COST of crop prodcution.

Discussion

564.	Question : Shiva and Rohit went to the zoo on a day's tour. Rohit was fascinated looking at the monkeys and started hurling stones and imitating them and Shiva objected to his behaviour. Which two characteristic features do you find common between monkeys and humans?
Answer» SOLUTION :Both, humans and monkeys belong to Class MAMMALIA of PHYLUM Chordata and Subphylum Vertebrata. Both have mammary glands. They have HANDS for manipulating. There is opposable thumb which helps in this manipulation. The legs are provided with toed digits.

Discussion

565.	Question : Shiva and Rohit went to the zoo on a day's tour. Rohit was fascinated looking at the monkeys and started hurling stones and imitating them and Shiva objected to his behaviour. Write two values Shiva exhibited by objecting to Rohit's behavior.
Answer» SOLUTION : Shiva has SYMPATHY for animals. He understands about a proper treatment to be GIVEN towards animals. He is against the cruelty towards the animals and TRIES to protect our co-species.

Discussion

566.	Question : Shark has ........ heart, while Whale has heart.
Answer» 2-chambered, 4-chambered 2-chambered, 3-chambered 3-chambered, 2-chambered 3-chambered, 4-chambered SOLUTION :2-chambered, 4-chambered

Discussion

567.	Question : Set up an experiment to demonstrate osmosis.
Answer»

Discussion

568.	Question : Seeing a bat flying over the roof of her house, Babita asked her father following questions : (i) What is this night flying bird ? (ii) How does it see during night ? (iii) What does it eat and how does it obtain its food ?
Answer» SOLUTION :(i) Bat is not a bird. It is a mammal that has patagia in the forelimbs to function as wings and help in bat's flight (II) Bat does not require sharp vision for its flight. It flies through ecolocation or SENDING echo waves that are INTERPRETED to known the obstacles. Bat thus ''sees through its ears''. (iii) Bat feeds on nocturnal flying insects such as moths. The insects are located through sound waves produced by them. Feeding on insects acts as BIOLOGICAL control on the population of night flying insects. It is a rule of nature which keeps ecological balance.

Discussion

569.	Question : Seeds are naked in ....
Answer» ANGIOSPERMS GYMNOSPERMS Both of these NONE of these Solution :Gymnosperms

Discussion

570.	Question : Scientist ......... wrote the book "The Origin of Species' (Whittaker, Charles Darwin, Linnaeus)
Answer» SOLUTION :CHARLES DARWIN

Discussion

571.	Question : Scientific names of two cattle species of India.
Answer» SOLUTION :BOS indicus (COW) and Bubalus BUBALIS (BUFFALO).

Discussion

572.	Question : Sanjana wants to buy a jam bottle in a grocery shop . What are the things she should observe on the label before purchasing it .
Answer» Solution :(a) Name of the product ( C ) Net WEIGHT (d) Maximum Retail Price (MRP) ( E ) DATE of Expiry (g) Date of best before use

Discussion

573.	Question : Salt is added as a preservative in pickles .
Answer» Solution :ADDITION of salt removes the MOISTURE content in the food by the PROCESS of OSMOSIS .

Discussion

574.	Question : Rough endoplasmic reticulum and Smooth endoplasmic reticulum.
Answer» SOLUTION :

Discussion

575.	Question : Rotation of crops must be done.
Answer» Solution :1. If the same type of crop is obtained from the same soil, every year, the fertility of the soil is CERTAINLY reduced. 2. The deficiency of nutrients arises in the soil. 3. The diseases and pests in the crop in crease. That is why rotation of CROPS must be DONE.

Discussion

576.	Question : Roots grow very deep and reach the layers where water is available. Which type of plants develops the above adaptation? Why?
Answer» Solution :Xerophytes are the type of PLANTS that grow DEEP roots so as to REACH the water source as they exist in a dry habitat,

Discussion

577.	Question : Rohu is a protochordata animal
Answer» ANSWER :F

Discussion

578.	Question :Ribbon-shaped and spiral chloroplast is present in which of the following organisms?
Answer» Ulothrix Agaricus SPIROGYRA CHALMYDOMONAS SOLUTION :Spirogyra

Discussion

579.	Question : Remove the shell of an egg by dissolving it in dilute hydrochloric acid. The shell is mostly calcium carbonate. A thin outer skin now encloses the egg. Put the egg in pure water and observe after 5 minutes. What do we observe ?
Answer» Solution :Dc-shelled egy KEPT in pure water swells. This happens due to entry of water inside the egg cytoplasm through the egg membrane. The concentration of water is higher on the outer SIDE than on the inner side. Thus, water ENTERS inside the egg causing it to swell. Here endosmosis TAKES place.

Discussion

580.	Question : Removal of weeds from cultivated fields during the early stages of crops is essential for a good harvest. Justify the statement.
Answer» Solution :1. Weeds compete with the host plants. 2. They take up nutients which the crop plants require for their good growth. 3. The space and light which the crop plants need is also reduced DUE to the weeds. 4. THEREFORE, weeds shouldbe removed during the early be removed during the early STAGES of crops for better growth of he crop plants.

Discussion

581.	Question : Removal of weeds from cultivated fields during the early stages of crop growth is esential for a good harvesting.
Answer» Solution :Different TYPES of weeds compete for food, space and light with the actual CROP plants in the agricultural farms. They take up nutrients and reduce the growth of the crop. The harvest is affected DUE to the weeds. Therefore, REMOVAL of weeds from cultivated FIELDS furing the early stages of crop growth is essential for a good harvest.

Discussion

582.	Question : Remma went to the market to buy vegetables along with her mother. He saw that some vegetable vendors were also selling white umbrell-like structures along with other vegetables. He asked his mother about these umbrella - like structures. Failing in getting a convincing reply from her mother she enquired from her science teacher about these structures the next day in the school. (i) What are umbrella - like structures called ? To which group they belong ? Where are they found ? (ii) Are all types of these structures edible ? (iii) What is the nutrient value of these edible structures ?
Answer» Solution :(i) These UMBRELLA - LIKE organisms are called gilled mushrooms which are edible spore-producing fruiting BODIES. These organisms are fungi and they grow on decaying ORGANIC matter (ii) No , all species of mushrooms are not edible as some as some of these species are HIGHLY poisonous. Agaricus compestris is a common edible mushroom (iii) Mushroom are rich in minerals, vitamins, etc.

Discussion

583.	Question : Relatively large vacuoles are present in
Answer» all PROKARYOTES all eukaryotes plant cells animal cells Answer :C

Discussion

584.	Question : ...............refers to the culture of prawns, pearl and edible oysters.
Answer» SOLUTION :AQUACULTURE

Discussion

585.	Question : Redraw the diagram Name and lable the parts mention below Blood vessels, lymph ducts and nerve fibres are seen.
Answer» ANSWER :PULP

Discussion

586.	Question : Red Sindhi, Shahiwal show excellent performance towards……..(milk production, reproduction, reistance to disease)
Answer» ANSWER :RESISTANCE to DISEASE

Discussion

587.	Question : Record the contributions made by various zoologists and botanists and taxonomists in the field of classification.
Answer» ANSWER :N/a

Discussion

588.	Question :Recognize the group of phyla of animals possessing open type of circulatory system?
Answer» ARTHROPODA-MOLLUSCA Mollusca-Annelida Annelida-Arthropoda Annelida -Echinodermata Solution : Arthropoda - Mollusca

Discussion

589.	Question : Reason for the diffusion of oxygen from alveoli to blood.
Answer» low concentration of OXYGEN in BLOOD As the WALLS of alveoli and blood vessels are THIN High concentration of oxygen in aveoli. All of the above. Answer :D

Discussion

590.	Question : Read the staternents given below. Make correction , if any in the portion underlined. Absorption of water in the small intestine takes by Diffusion.
Answer» ANSWER :OSMOSIS

Discussion

591.	Question : Read the statement given below. Make corrections, if any in the portion underlined. Dark phase of photosynthesis takeplace in Grana.
Answer» ANSWER :STROMA

Discussion

592.	Question : Raman while doing an experiment to find out the percentage of water absorbed by raisins measured the mass of dry raisins as 50g. He soaked the raisins in water for four hours and again measured the mass as 80 g Calculate the percentage of water absorbed by the raisins. He then placed swollen raisins in concentrated salt solution for four hours. What will he observe ?
Answer» Solution :The raisins will absorb water by the process of ENDOSMOSIS. Hence the weight will increase INITIALLY. The percentage of water absorbed by the raisins is calculated as follows: Calculations : Weight of dry raisins = `=50g =W_(2)` (2) Weight of swollen raisins `=80g=W_(2)` Weight of the water absorbed by raisins = `W_(2)-W_(1)=80-50=30` Percentage (%) of water absorbed by raisins`W_(2)-W_(1)//W_(1)xx100` `=30//50xx100=60g` LATER, when these raisins are transferred to concentrated salt solution, there will be exosmosis. The raisins will throw out the water and they will reduce in their weight. Raman will thus observe the phenomena of exosmosis as the medium in which the raisins are KEPT is hypertonic. The membrane of raisins act as the semi permeable membrane in both the cases,

Discussion

593.	Question : Raisins swell up after being placed them in beaker containing water for sometimes because .....
Answer» water INSIDE the raisins EXITS when PLACED in a beaker of water. the concentration of water in the cell sap is the same as that of water in the beaker, the concentration of water in the cell sap is higher than the water in the beaker the concentration of water in the cell sap is LESSER than that of water in the beaker. Answer :A::B::C

Discussion

594.	Question : Raghunath accidentally dropped bag of raisinsinto water. He did not remove it from water by mistake. Later his Master scolded him for spoilling raisins. So he placed them in sun. After few hours, the raisins were apparently dry and resembled to the original raisins. (1) What did he observe initially and later ? (2) Which membrane acts as semi-permeablemembrane in this endosmosis and exosmosis? (3) What values are seen in Raghunath ?
Answer» Solution :( 1 ) The raisins swelled up due to endosmosis as the water entered in them. Later after placing the raisins in sun, they started DRYING up. The high temperature EVAPORATED the water and now endosmosis OCCURRED. (2) The outermost membrane of the raisins acted as the semi-permeable membrane. (3) Raghunath is talented enough to make the raisins dry. He UNDERSTANDS the concept of osmosis and hence he skillfully converts the raisins back to their original shape and form.

Discussion

595.	Question : Rabies virus is spread by the bite of infected dogs and other animals. There are anti-rabies vaccines for both humans and animals. Find out the plan of your local authority for the control of rabies in your neighbourhood. Are these measures adequate ? If not, what improvementswould you suggest ?
Answer» Solution : The STREET dogs are vaccinated by variousNGOs to protect them against infection of rabies. Such vaccinated dogs pose no threat to the PEOPLE. They are also STERILIZED and hence dog population is kept under CONTROL. Municipalities in big cities also work with such NGOs. These measures are not adequate as the NGOs cannot reach to all the parts of cities. In villages too there is no provision LIKE this. There should be participation of the local people and veterinarians in the locality to find solutions about the dog menace.

Discussion

596.	Question : Rabi crop is a crop of …….season.
Answer» ANSWER :WINTER

Discussion

597.	Question :Quinine drug is obtained from ......................
Answer» SOLUTION :Cinhona officinalis

Discussion

598.	Question : Put dried raisins or apricots in plain or tap water and leave them for some time. Then place them into a concentrated solution of sugar or salt. Significance of diffusion and osmosis :
Answer» Solution :(1) Plant cells and unicellular fresh WATER organisms gain water through osmosis. ? (2) Plant ROOTS absorb water by osmosis. (3) Exchange of gases and water takes place by diffusion in cell. (4) Nutrients are obtained using these processes by the cell.

Discussion

599.	Question : Put dried raisins or apricots in plain or tap water and leave them for some time. Then place them into a concentrated solution of sugar or salt. Endocytosis
Answer» SOLUTION :Engulfing the MATERIALS from outside into the cell with the help of PLASMA membrane is called endocytosis. e.g., Amoeba takes up the FOOD by process of endocytosis.

Discussion

600.	Question : Put dried raisins or apricots in plain or tap water and leave them for some time. Then place them into a concentrated solution of sugar or salt. Observe what happens :
Answer» Solution :Observations: (1) Raisins or apricots kept in water swell. This happens due to ENDOSMOSIS because water from higher concentration ENTERS in the raisins through its membrane. (2) Raisins or apricots kept in concentrated SUGAR or salt solution shrink. This happens due to exosmosis because water from the raisins leave and enter in the outer MEDIUM. Water concentration inside the raisin is higher than the outer SUGARY or salty water.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Specific drug is necessary for the specific disease in the treatment for total eradication of the disease.

Question : Soft foot is found in phylum ......... for locomotion.

Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. Can you write down further characteristics of monocots and dicots on the basis of these observations ?

Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. How many petals are found in the flower of these plants?

Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. Do the leaves have parallel or reticulate venation ?

Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. Are the roots, taproots or fibrous ?

Question : Soak seeds of green gram, wheat , maize, peas and tamarind . One they become tender, try to split the seed. Do all the seeds break into two nearly equal halves?

Question : Smooth muscles are found in ______.

Question : Small intestine is seen in the ………………

Question : Small arteries spilt into ……

Question : Skin of reptilians are smooth and moist.

Question : Skates are …………. Fishes.

Question : Short duration plants reduce the cost of crop production.

Question : Shiva and Rohit went to the zoo on a day's tour. Rohit was fascinated looking at the monkeys and started hurling stones and imitating them and Shiva objected to his behaviour. Which two characteristic features do you find common between monkeys and humans?

Question : Shiva and Rohit went to the zoo on a day's tour. Rohit was fascinated looking at the monkeys and started hurling stones and imitating them and Shiva objected to his behaviour. Write two values Shiva exhibited by objecting to Rohit's behavior.

Question : Shark has ........ heart, while Whale has heart.

Question : Set up an experiment to demonstrate osmosis.

Question : Seeing a bat flying over the roof of her house, Babita asked her father following questions : (i) What is this night flying bird ? (ii) How does it see during night ? (iii) What does it eat and how does it obtain its food ?

Question : Seeds are naked in ....

Question : Scientist ......... wrote the book "The Origin of Species' (Whittaker, Charles Darwin, Linnaeus)

Question : Scientific names of two cattle species of India.

Question : Sanjana wants to buy a jam bottle in a grocery shop . What are the things she should observe on the label before purchasing it .

Question : Salt is added as a preservative in pickles .

Question : Rough endoplasmic reticulum and Smooth endoplasmic reticulum.

Question : Rotation of crops must be done.

Question : Roots grow very deep and reach the layers where water is available. Which type of plants develops the above adaptation? Why?

Question : Rohu is a protochordata animal

Question :Ribbon-shaped and spiral chloroplast is present in which of the following organisms?

Question : Remove the shell of an egg by dissolving it in dilute hydrochloric acid. The shell is mostly calcium carbonate. A thin outer skin now encloses the egg. Put the egg in pure water and observe after 5 minutes. What do we observe ?

Question : Removal of weeds from cultivated fields during the early stages of crops is essential for a good harvest. Justify the statement.

Question : Removal of weeds from cultivated fields during the early stages of crop growth is esential for a good harvesting.

Question : Relatively large vacuoles are present in

Question : ...............refers to the culture of prawns, pearl and edible oysters.

Question : Redraw the diagram Name and lable the parts mention below Blood vessels, lymph ducts and nerve fibres are seen.

Question : Red Sindhi, Shahiwal show excellent performance towards……..(milk production, reproduction, reistance to disease)

Question : Record the contributions made by various zoologists and botanists and taxonomists in the field of classification.

Question :Recognize the group of phyla of animals possessing open type of circulatory system?

Question : Reason for the diffusion of oxygen from alveoli to blood.

Question : Read the staternents given below. Make correction , if any in the portion underlined. Absorption of water in the small intestine takes by Diffusion.

Question : Read the statement given below. Make corrections, if any in the portion underlined. Dark phase of photosynthesis takeplace in Grana.

Question : Raisins swell up after being placed them in beaker containing water for sometimes because .....

Question : Rabi crop is a crop of …….season.

Question :Quinine drug is obtained from ......................

Question : Put dried raisins or apricots in plain or tap water and leave them for some time. Then place them into a concentrated solution of sugar or salt. Significance of diffusion and osmosis :

Question : Put dried raisins or apricots in plain or tap water and leave them for some time. Then place them into a concentrated solution of sugar or salt. Endocytosis

Question : Put dried raisins or apricots in plain or tap water and leave them for some time. Then place them into a concentrated solution of sugar or salt. Observe what happens :