CBSE Class 10 Biology Control And Coordination Worksheet Set B

Read and download free pdf of CBSE Class 10 Biology Control And Coordination Worksheet Set B. Students and teachers of Class 10 Biology can get free printable Worksheets for Class 10 Biology in PDF format prepared as per the latest syllabus and examination pattern in your schools. Standard 10 students should practice questions and answers given here for Biology in Grade 10 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 10 Biology Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems provided here with solutions on daily basis to get more score in school exams and tests

Control And Coordination Class 10 Biology Worksheet Pdf

Class 10 Biology students should refer to the following printable worksheet in Pdf for Control And Coordination in standard 10. This test paper with questions and answers for Grade 10 Biology will be very useful for exams and help you to score good marks

Class 10 Biology Worksheet for Control And Coordination

 

Question : Which Hormone maintain calcium and phosphate levels in the blood ? 
a. calcitonin
b. Thymosin
c. Thyroxin
d. Melatonin
Answer : A
Explanation: Calcitonin hormone maintains the calcium and phosphate levels in the blood. It provides strong bones and healthy teeth.
 
 
Question : If the parathyroid gland is damaged, there may be a 
a. rise in phosphorus level
b. rise in calcium level
c. fall in calcium level
d. fall in phosphorus level
Answer : C
Explanation: In hypocalcemia, the calcium level in blood is too low. A low calcium level may result from a problem with the parathyroid glands, as well as from diet, kidney disorders, or certain drugs.


Question : What are inhibitory hormones? 
Answer :   Inhibitory hormones are secreted by the hypothalamus(commander of the endocrine glands). They inhibit the secretion of certain hormones secreted from pituitary gland.
 

Question : How does chemical coordination take place in animals?
Answer : Chemical coordination takes place in animals with the help of hormones. Hormones are the chemical fluids that are secreted by the glands of the endocrine system. Hormones travel through the blood and regulate the overall growth and development of the animals.

 
Question : Why is the use of iodized salt advisable?
Answer : Because iodine stimulates the thyroid gland to produce thyroxin hormone. It regulates carbohydrate,fat, and protein metabolism in our body. Deficiency of this hormone results in the enlargement of the thyroid
gland. This can lead to goitre, a disease characterized by swollen neck.
 
 
Question : Why is it advised to use iodised salt in the diet? 
Answer :   Iodised salt in the diet is advisable because it contains iodine, which is an essential element for the synthesis of thyroxine hormone secreted from thyroid gland. The deficiency of iodine in the diet causes goitre.
 

Question : How does our body respond when adrenaline is secreted into the blood?
Answer :  When someone is in danger or in emergency then adrenal gland secrete adrenaline hormone. It is secreted directly into the blood and is transported to different parts of the body. It speeds up the heartbeat and hence supplies more oxygen to the muscles. This results in increasing breathing rate and blood pressure which enable them to fight with such urgent situation.
 

Question : Why are some patients of diabetes treated by giving injections of insulin?
Answer : Diabetes is caused due to less or no secretion of hormone insulin by pancreas. In such a person, blood sugar level is high. Insulin converts extra sugar present in blood into glycogen. Thus, patients suffering from diabetes are given insulin injection to control their blood sugar level.
 
 
Question : How involuntary actions and reflex actions are different form each other? 
Answer : 
Im
 
 
Question : How does feedback mechanism regulate the hormone secretion? 
Answer :  Hormones help to maintain homeostasis by their integrated action and feedback control. Feedback control is mostly negative and rarely positive. In negative feedback control, synthesis of hormone slows or halts when its level in the blood rises above normal. In positive feedback control, an accumulating biochemical substance increases its own production.

 

Question : Design an experiment to demonstrate hydrotropism.
Answer :   Procedure:
(i) Plant a seedling in a vessel containing soil.
(ii) Adjacent to the seedling put a porous pot containing water.
(iii) Leave the set up for few days.
Observation : On examining the roots it is observed that the roots bend towards the source of water and do not grow straight. This experiment demonstrates the phenomenon of hydrotropism.

 8th.sci.eng.oct.nov.21.22 14

 

Question : Nervous and hormonal system together perform the function of control and coordination in human beings". Justify the statement. 
Answer :   The nervous system controls and coordinates all the functions in the body. It carries out its functions in close coordination with the hormonal system. Nerves don’t reach every nook and corner of the body and hence needs assistance from the hormones to control all the parts of the body. Moreover, while the nervous control is somewhat faster, hormonal control is slower. Hormonal control is mainly based on feedback mechanism and tells the body to either pace up or slow down; as per the situation.
Nervous control, on the other hand, is more of a direct control. Both of them complement each other. Thus, it can be said that nervous and hormonal systems together perform the function of control and coordination in human beings.  
 

 

More Question

Question : What is the stimulus in:

a) Phototropism

b) Geotropism

c) Chemotropism

d) Hydrotropism

e) Thigmotropism

Question : Distinguish between tropic and nastic movements of plants

Question : Give one example of the movement of a plant part which is caused by the loss of water

Question : Which plant hormone is responsible for the wilting and falling of leaves?

Question : Differentiate between gigantism & dwarfism

Question : Name one hormone secreted by:

a) Testis

b) Pancreas

c) Thyroid

d) Ovary

Question : What is meant by receptors and effectors ?

Question : Why does reflex action not depend on the thinking tissue in the brain

Question : What happens at the synapse which occurs between the two neurons?

Question : How is the chemical coordination brought about in plants?

Question : With the help of a schematics diagram, trace the sequence of events occurring, when you step on a sharp object. Name this action.

Question : How does our body maintain blood sugar level?

Question : Name the hormone synthesized at the shoot tips. How does it help the plant to respond to light?

Question : What is the function of receptors in human body? What are the types of receptors found in human? What problems are likely to occur if receptors do not work properly?

Question : If you keep the potted plant horizontally for 2‐3 days, what types of movement would be shown by the shoot and root after 2 or 3 days. Why?

 

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