study the graph then answer the question that follows

Study the chart given below and answer the questions that adopt:

(i) Write the status of food and space in the curves (a) and (b).

(ii) In the petit mal epilepsy of predators, which one of the two curves would suitably depict the target population?
(iii) Time has been shown happening X-axis and there is a antiparallel dotted line higher up information technology. Cave in the significance of this dotted note.

---

(i) Curve a represents exponential growth which shows that there is ample food and space for the population. Resources are unlimited.

Curve b represents logistic growth and shows that there is limiting food and space for the population. The resources are limiting.

(two) In the absence of predators, curve (a) would befittingly depict the prey population.

(iii) The dotted line represents the carrying capacity of the environs. The carrying content represents the size of universe that the environs can hold by providing necessary resources. When a population reaches this line its universe size is stabilized aside various environmental factors.

---

(a) Explain openhanded reasons why the tourists visiting Rohtang Pass or Mansarovar are advised to resume normal active life only later a fewer years of reaching there.

(b) It is impossible to retrieve small animals in the glacial regions. Break reasons.

---

(a) Tourists visiting high altitude areas such as Rohtang Pass or Mansarovar, experience elevation sickness. Its symptoms include sickness, pall and heart palpitations. This is because in the down in the mouth air pressure of high-topped altitudes, the body does not get enough atomic number 8. But, gradually we receive acclimatised and stop experiencing height sickness. The body compensates first gear oxygen availability by increasing red blood cellphone production, decreasing the binding affinity of  hemoglobin and by increasing ventilation rate. Thus, the visitors are advised to resume their normal active life involving heavy works only afterwards few days because for doing heavy tasks our consistency needs energy and this energy is obtained by the oxidation of glucose in the mien of oxygen which is a limiting factor in higher altitudes.

(b) Smaller animals are rarely found in Polar Regions because small animals have a larger surface area relation to their volume. Since rut departure or heat clear is a purpose of

surface field, they tend to lose organic structure heat at a precise fast rate when it is cold outside; because of which they accept to expend much energy to generate consistence heat finished metabolism.

---

(a) Lean the contrary attributes that a population has and not an individual organism.

(b) What is population density ? Explain any three different ways the universe density can be plumbed, with the help of an example each.

---

(a) Following are the attributes that a universe has but an individual organism does not have:

• Birth rate: for each person births. It represents the increase in number with respect to the population.
• Demise rank: per capita deaths. It represents the lessen in number with respect to the population.
• Turn on ratio: Ratio of act of males to females in a given  population.
• Old age distribution: A population at any given time is nerveless of individuals of different ages.

(b) Population density means number of individuals lay out per unit area. Population density rear end be measured by determining the population sized. The diametrical methods to study population size are as follows:

(1) Excursive method:  In this method the population density is measured without in reality counting or eyesight the organism. For examples – the Panthera tigris consensus in our national park and tiger reserves are often supported the pug marks and faecal pellets of the tiger.
Case: The number of Parthenium plants in a conferred area can be measured using the quadrat method.

(2) Direct watching: It involves the counting of organisms in the given area.
Example: Systematic to determine the number of bacterium growing in a Petri dish, their colonies are counted.

(3)Relational densities: When the population is too large to be counted then relative compactness is taken into account . For exercise: The number of fishes caught per ambush gives the bill of their total density in a given water organic structure.

---

study the graph then answer the question that follows

Source: https://www.zigya.com/study/book?class=12&board=pseb&subject=Biology&book=Biology&chapter=Organisms+and+Populations&q_type=&q_topic=Populations+&q_category=E&question_id=BIEN12110119

Berbagi :