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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ८

Cockroach moves with the help of its - Science

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प्रश्न

Cockroach moves with the help of its

विकल्प

  • leg

  • bone

  • muscular foot

  • whole body

MCQ

उत्तर

Whole-body

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 19: Movements in Animals - Exercises [पृष्ठ २३०]

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सामाचीर कलवी Science [English] Class 8 TN Board
अध्याय 19 Movements in Animals
Exercises | Q I. 6. | पृष्ठ २३०

संबंधित प्रश्न

Mention the kind of biodiversity of more than a thousand varieties of mangoes in India represent. How is it possible?


Define Biodiversity.


'India has greater ecosystem diversity than Norway." Do you agree with the statement? Give reasons in support of your answer.


Enlist various types of species diversity.


Very Short Answer Type Question:
Name the habitat where various types of fish live.


Very Short Answer Type Question:
What is the function of gill?


Define – dichotomous key


Solanum trilobatum is the binomial name of Thoothuvalai. The word ‘Solanum’ refers to


Who introduced the term biodiversity?


Compare and Contrast the insitu and exsitu conservation.


The Extinction of spices is called ______.


Assertion (A): In Biodiversity each species, no matter how big of small has an important role to play in the ecosystem.
Reason (R): It maintains the ecological balance.


Write the binomials of 

  1. Man 
  2. Tapeworm

Genetic diversity refers to ______. 


Why is genetic variation important in the plant Rauwolfia vomitoria?


Log S =log C = Z log A is the equation that depicts relation between______.


The table given below shows the Area, Y-intercept and regression coefficient of the continents namely, Africa and Europe. Study the table carefully and answer the questions that follow:

  Africa Europe
Area (A) 62,000 km sq. 65,000 km sq.
Y-intercept (C) 10 20
Regression
coefficient (Z)
1 1
  1. Calculate the species richness (S) of each continent.
  2. Which of these continents shows a higher biodiversity?
  3. State any two factors that cause an increase in biodiversity.

Samson and Dorothy surveyed two islands, ‘A’ and ‘B’. They recorded the relevant data in the following format in their research folder:

  Parameter Island A Island B
(a) Area (A) 45 × 103 Km2 12 × 105 Km2
(b) Regression co-efficient (Z) 1 1
(c) Y-intercept 20 10
  1. Derive the species-richness for each island.
  2. Which island exhibits greater biodiversity? Support your answer with a reason.

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