የ12ኛ ክፍል ውጤት ወጥቷል፤ ውጤትዎን የሚያዩበት መንገድ

የምዕራፍ ማስታወሻዎችና የመልመጃ ጥያቄዎች

የ11ኛ ክፍል ባዮሎጂ ምዕራፍ 6፦ የህዝብ ቁጥር እና የተፈጥሮ ሀብት

በዚህ ገጽ ያለው ሁሉ ለ11ኛ ክፍል የባዮሎጂ መፅሐፍ ምዕራፍ 6 ነው፦ ምዕራፉ የሚሸፍነው፣ አጭር ማስታወሻዎቹ፣ የመልመጃ ጥያቄዎች ከመልሶቻቸው ጋር፣ እና ቪዲዮ ባለበት የትምህርቱ ቪዲዮ።

ከ Google Play ያውርዱ
4
ካርዶች
10
የምዕራፍ 6 የመልመጃ ጥያቄዎች

ምዕራፍ 6 የሚሸፍነው

  1. 1.1Population size, density and dispersal
  2. 2.2Exponential and logistic growth in populations
  3. 3.3Demographic structure
  4. 4.4Population regulation
  5. 5.Natural resources
  6. 6.1Renewable
  7. 7.2Non-renewable
  8. 8.Conservation of natural resources in Ethiopia
  9. 9.Impact of traffic accident on wild and domestic animals
  10. 10.Impact of human activities on the environment
  11. 11.2Climate change
  12. 12.3Global warming
  13. 13.4Ozone layer depletion
  14. 14.5Acid rain
  15. 15.6Loss of Biodiversity
  16. 16.7Toxic bioaccumulation
  17. 17.8Resource depletion
  18. 18.Indigenous conservation practices in Ethiopia

የምዕራፍ 6 አጭር ማስታወሻዎች

በ11ኛ ክፍል የባዮሎጂ ገጽ ላይ በዚህ ምዕራፍ ሥር የተመዘገቡት ካርዶች። አንድ በአንድ ይክፈቱ።

dNdt=rN(K−NK)\frac{dN}{dt} = rN\left(\frac{K - N}{K}\right)
dNdt\frac{dN}{dt}
የህዝብ ቁጥር ዕድገት ምጣኔs−1\text{s}^{-1}
rr
የነፍስ ወከፍ የዕድገት ምጣኔs−1\text{s}^{-1}
NN
የህዝብ ብዛትdimensionlessdimensionless
KK
የመሸከም አቅምdimensionlessdimensionless

መቼ እንደሚጠቀሙበት

የተፈጥሮ ሀብት ውሱን በሆነበት እና carrying capacity ባለበት ሁኔታ የ population growth rate ለማስላት ያገለግላል።

ይጠንቀቁ

N ከ K ጋር እኩል ሲሆን፣ (K - N)/K ዜሮ ስለሚሆን የ population growth ሙሉ በሙሉ ይቆማል።

ከGrade 11 Biology፣ ከገጽ 236 ጀምሮ የተዘጋጀ፤ ከመውጣቱ በፊት ሁለት ጊዜ ተረጋግጧል

የ Factor ዓይነትአሠራርየ Factor ባህሪምሳሌዎች
Density-dependentተፅዕኖው ከ population density ጋር ይለወጣልBioticPredation, competition, disease, waste
Density-independentተፅዕኖው በ population density አይወሰንምAbioticWeather, earthquakes, floods, pollution

መቼ እንደሚጠቀሙበት

የ population size የሚገድቡትን biotic እና abiotic ምክንያቶች ለመለየት ያገለግላል።

ይጠንቀቁ

Density-independent የሆኑ አደጋዎች population density ብዙም ሆነ ትንሽ በእኩል መጠን ይጎዳሉ።

ከGrade 11 Biology፣ ከገጽ 236 ጀምሮ የተዘጋጀ፤ ከመውጣቱ በፊት ሁለት ጊዜ ተረጋግጧል

N=Aa⋅nN = \frac{A}{a} \cdot n
NN
የተገመተው population sizedimensionlessdimensionless
AA
አጠቃላይ የ habitat ስፋትm2\text{m}^2
aa
በ quadrat የተካለለ ጠቅላላ የናሙና ስፋትm2\text{m}^2
nn
በናሙና ስፋቱ ውስጥ የተቆጠሩ ጠቅላላ individualsdimensionlessdimensionless

መቼ እንደሚጠቀሙበት

የማይንቀሳቀሱ ወይም ዝግተኛ ህይወት ያላቸውን ነገሮች አጠቃላይ population size ለመገመት ይጠቅማል።

ይጠንቀቁ

a ማለት የተጣሉት quadrats አጠቃላይ ድምር ስፋት እንጂ የአንዲት quadrat ስፋት ብቻ አለመሆኑን ያረጋግጡ።

ከGrade 11 Biology፣ ከገጽ 236 ጀምሮ የተዘጋጀ፤ ከመውጣቱ በፊት ሁለት ጊዜ ተረጋግጧል

ዓይነትየልጆች ብዛትየወላጅ እንክብካቤየሞት ወቅትምሳሌዎች
Type Iጥቂትከፍተኛበአብዛኛው በዕድሜ መግፋት ወቅትየሰው ልጆች፣ ትልልቅ mammals
Type IIመካከለኛመካከለኛበሁሉም የዕድሜ ክልል ቋሚ የሆነአንዳንድ አዕዋፍ
Type IIIበርካታበጣም ጥቂት ወይም ምንምበመጀመሪያው የሕይወት ዘመን ከፍተኛዕፅዋት፣ ዓሦች፣ invertebrates

መቼ እንደሚጠቀሙበት

ህዋሳትን በሞት ሁኔታቸው፣ በልጆች ብዛት እና በእንክብካቤ ደረጃቸው ለመመደብ ያገለግላል።

ይጠንቀቁ

Type II በሁሉም የዕድሜ ክልል ውስጥ ቋሚ የሆነ የሞት መጠን ያሳያል።

ከGrade 11 Biology፣ ከገጽ 236 ጀምሮ የተዘጋጀ፤ ከመውጣቱ በፊት ሁለት ጊዜ ተረጋግጧል

የምዕራፍ 6 የመልመጃ ጥያቄዎች

በዚህ ምዕራፍ ላይ የተጻፉ 10 የምርጫ ጥያቄዎች፣ እያንዳንዳቸው መልሱና ምክንያቱ አላቸው። መልሱን ከመክፈትዎ በፊት ይሞክሩ። ጥያቄዎቹ በእንግሊዝኛ ናቸው።

ጥያቄ 1

Which sampling method is most appropriate to estimate the population size of mobile animals such as birds or rats?

  1. A.Mark-recapture method
  2. B.Quadrat method
  3. C.De Jure census method
  4. D.Stationary pyramid method
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A Mark-recapture method

ምክንያቱ

The textbook states that the mark-recapture method is used for moving animals, whereas the quadrat method is used for immobile organisms such as plants.

ጥያቄ 2

When individuals in a population are clustered together in groups across a habitat, which dispersal pattern is present?

  1. A.Clumped dispersion
  2. B.Uniform dispersion
  3. C.Random dispersion
  4. D.Constant dispersion
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A Clumped dispersion

ምክንያቱ

Clumped dispersion occurs when individuals of a population are clustered in groups.

ጥያቄ 3

Which type of survivorship curve is typical of humans and most mammals, where mortality is low in early and middle years and highest in old age?

  1. A.Type I
  2. B.Type II
  3. C.Type III
  4. D.Type IV
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A Type I

ምክንያቱ

Type I survivorship curve describes organisms that produce few offspring, provide high parental care, and have mortality concentrated mostly in older individuals.

ጥያቄ 4

Which of the following is classified as a non-renewable natural resource?

  1. A.Coal
  2. B.Solar energy
  3. C.Wind energy
  4. D.Biomass energy
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A Coal

ምክንያቱ

Coal, minerals, and fossil fuels are non-renewable resources because their rate of consumption exceeds their rate of natural recovery.

ጥያቄ 5

What condition is described when the per capita rate of increase (r) equals zero?

  1. A.Zero population growth
  2. B.Exponential growth
  3. C.Population extinction
  4. D.Maximum carrying capacity
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A Zero population growth

ምክንያቱ

When r is zero, the population size is unchanging, which is defined as zero population growth.

ጥያቄ 6

In which census method does the government fix a single date (often a full-moon night) to count everyone present in the country?

  1. A.De Facto method
  2. B.De Jure method
  3. C.Sample registration method
  4. D.Quadrat count method
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A De Facto method

ምክንያቱ

The De Facto method conducts the census on a single fixed date throughout the country, whereas the De Jure method covers an enumeration period of two or three weeks and counts permanent residents.

ጥያቄ 7

What does an expansive population pyramid with a broad base and a narrow top indicate about a population?

  1. A.A large percentage of young people with high fertility rates
  2. B.A shrinking population with a high proportion of elderly people
  3. C.A stable population with equal proportions across all ages
  4. D.A high life expectancy with very low birth rates
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A A large percentage of young people with high fertility rates

ምክንያቱ

Expansive pyramids have a broad base representing a large proportion of young individuals and reflect high fertility rates with lower life expectancies.

ጥያቄ 8

Which of the following is a density-independent (abiotic) factor that regulates population growth?

  1. A.Catastrophic earthquake
  2. B.Intraspecific competition
  3. C.Infectious disease spread
  4. D.Predator abundance
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A Catastrophic earthquake

ምክንያቱ

Natural disasters like earthquakes, weather, and pollution are density-independent abiotic factors because they affect organisms regardless of population density.

ጥያቄ 9

A biology student in Awash marked and released 60 birds. In a second capture of 100 birds, 20 were marked and 80 were unmarked. What is the estimated total bird population size (N)?

  1. A.300
  2. B.120
  3. C.800
  4. D.1200
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A 300

ምክንያቱ

Using the mark-recapture formula N = (M * n) / X: N = (60 * 100) / 20 = 6000 / 20 = 300 birds.

ጥያቄ 10

In the logistic growth formula dN/dt = rN(K - N)/K, what does K represent?

  1. A.Carrying capacity
  2. B.Crude death rate
  3. C.Number of marked individuals
  4. D.Intrinsic rate of increase
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A Carrying capacity

ምክንያቱ

K represents the carrying capacity, which is the maximum population size that available environmental resources can support.

መተግበሪያው በዚህ ምዕራፍ ላይ 12 ጥያቄዎች አሉት፤ እየሠሩ ያርምዎታል። እዚህ ያሉት የመጀመሪያዎቹ 10 ናቸው።

የምዕራፍ 6 የመፅሐፍ ገጾች

ሙሉው የ11ኛ ክፍል የባዮሎጂ መማሪያ መፅሐፍ፣ በነጻ PDF።

የትምህርት ሚኒስቴር እትም, እንግሊዝኛ, 294 ገጾች

PDF ያውርዱ

ይህን ምዕራፍ በመተግበሪያው ይለማመዱ

Temari ይህን ምዕራፍ ወደ ጊዜ የተቆረጠለት መልመጃ ይለውጠዋል፣ እየሠሩ ያርምዎታል፤ ያልገባዎትንም የሚያብራራ የ AI አስተማሪ አለ።

በነጻ ይጀምሩ

Temari.et ለ Android ስልኮች መተግበሪያ አለው፤ በ Google Play ላይ በነጻ ይገኛል።

ይግቡመለያዎን ይክፈቱ