Download App

Respiration and Circulation — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYRespiration and Circulation4 Marks
Question
Distinguish between : Hypertension and Hypotension.
✓

Answer

HypertensionHypotension
1. Blood pressure values more than 140 mm Hg SP and 90 mm HG DP is called hypertension.1. Blood pressure values less them 120 mm Hg SP and 70 mm HG DP is called hypotension.
2. Excessive hypertension can result into lethal complications such as stroke or paralysis.2. Hypotension may not be lethal if immediate measures are taken to raise the blood pressure.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Case study (4 Marks)" from Respiration and Circulation→Respiration and Circulation — all question types→BIOLOGY STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Read the following and answer any four questions from (i) to (v) given below:
Aditya went to his hometown located in countryside along with his parents during his summer vacations. His grand parents' house is surrounded by farmland from all sides. Lots of crops were growing nearby and Aditya was very excited to visit the crop fields. He seeked permission from his mother to play in farmland along with his friends and then went to play in the fields. On returning back he had running nose, watering eyes and continuous sneezing which was very frequent. TI1e symptoms worsened with time. Based on the above information, answer the following questions.
  1. What could be the possible reason for Aditya's condition?
  1. Allergy
  2. Infection
  3. Malnutrition
  4. Genetic disorder
  1. How can allergy be diagnosed in a person?
  1. Presence of large amount of IgE antibodies in the blood.
  2. Presence of large number of bacteria in the blood.
  3. Presence of bilirubin and bilirubin pigments in the stool.
  4. Presence of sickle shaped RBCs in the blood
  1. The symptoms which Aditya developed on account of being allergic are consequence of?
  1. Inflammation of membrane lining the nose and conjunctiva
  2. Swelling up of tissue surrounding bronchioles of lungs
  3. Dilation of all arteries so that large amount of fluid passes from blood to tissues.
  4. All of these.
  1. Name the type of allergy that Aditya developed.
  1. Asthma
  2. Anaphylaxis
  3. Hay fever
  4. Urticaria
  1. Assertion : Hay fever is the form of allergy due to pollens of grasses and other plants.
Reason : Hay fever symptoms are due to release of histamines and often respond well to treatment with antihistamines.
  1. Both assertion and reason are true, and reason is the correct explanation of assertion.
  2. Both assertion and reason are true, but reason is not the correct explanation of assertion.
  3. Assertion is true, but reason is false.
  4. Both assertion and reason are false.
→
Read the following and answer any four questions from (i) to (v) given below:
Oogenesis is the process of formation of ovum in ovaries. It consists of three phases : multiplication, growth and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of pituitary gland to secrete LH and FSH.
  1. What is the function of hormone FSH?
  1. It inhibits the formation of estrogen.
  2. It induces the release of secondary oocyte.
  3. It stimulates the growth of Graafian follicles.
  4. It causes ovulation.
  1. Which hormone induces the rupture of the mature Graafian follicle?
  1. Follicle stimulating hormone.
  2. Gonadotropin releasing hormone.
  3. Progesterone.
  4. Luteinising hormone.
  1. Which cell division is involved in the formation of secondary oocyte?
  1. Mitosis.
  2. Meiosis I.
  3. Amitosis.
  4. Meiosis II.
  1. Identify the function(s) of LH.
  1. Release of secondary oocyte from Graafian follicle.
  2. Stimulates corpus luteum to secrete progesterone.
  3. Stimulates estrogen formation.
  4. Promotes development of egg to form secondary oocyte.
  1. (A) and (B) only.
  2. (B) and (C) only.
  3. (A), (C) and (D) only.
  4. (B) only.
  1. Assertion: The increase in progesterone level exerts positive feedback on GnRH.
Reason: The rising level of progesterone stimulate production of FSH and LH.
  1. Both assertion and reason are true, and reason is the correct explanation of assertion.
  2. Both assertion and reason are true, but reason is not the correct explanation of assertion.
  3. Assertion is true, but reason is false.
  4. Both assertion and reason are false.
→
Distinguish between: Asexual Reproduction – Sexual Reproduction
→
Column A (Mechanism)Column B (Type of pollination)
(1) Geitonogamy(a) Thea
(2) Herkogamy(b) Gloriosa
(3) Self-sterility(c) Cucurbita
(4) Protogyny(d) Calotropis
→
Column AColumn B
(1) Walter Rosen(a) Popularisation of term biodiversity
(2) David Tillman(b) Rivet Popper Hypothesis
(3) Paul Ehrlich(c) Productivity Stability Hypothesis
(4) Edward Wilson(d) Coined
→
Distinguish between : Communicable and non-communicable diseases.
→
Distinguish between : Single circulation and Double circulation.
→
Distinguish between : Inspiratory Reserve Volume (IRV) and Expiratory Reserve Volume (ERV).
→
Read the following and answer any four questions from (i) to (v) given below:
Over population causes number of family problems. Strategies like birth control methods help to control population explosion. Natural methods of birth control do not involve medications or devices to prevent pregnancy, but rather rely on behavioural practices and/ or making observations about menstrual cycle.
  1. Which method helps in contraception by temporary absence of sex?
  1. Coitus interruptus.
  2. Withdrawal method.
  3. Rhythm method.
  4. Lactational amenorrhea method.
  1. Assertion: The effectiveness of coitus interruptus method is limited.
Reason: Some sperms may pass into vagina before ejaculation.
  1. Both assertion and reason are true, and reason is the correct explanation of assertion.
  2. Both assertion and reason are true, but reason is not the correct explanation of assertion.
  3. Assertion is true, but reason is false.
  4. Both assertion and reason are false.
  1. Why is lactational amenorrhea effective for about 4-5 months after parturition?
  1. Ovulation occurs on about the $14^{th}$ day of menstruation.
  2. Ovulation does not occur during intense lactation.
  3. This method inhibits mobility of sperms.
  4. Both (b) and (c).
  1. Which fact is not the basis of periodic absence method of birth control?
  1. Ovum remains alive for about 1-2 days.
  2. Ovulation occurs on about $14^{th}$ day of menstruation.
  3. Sperms survive for about 3 days.
  4. Alteration in uterine endometrium.
  1. On which days of menstrual cycle should coitus be avoided to prevent fertilisation?
  1. 10-17
  2. 6-13
  3. 1-5
  4. 15-28
→
Distinguish between: Primary sex organs and Secondary sex organs.
→