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Class 10
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Homology and Analogy
Homology and Analogy
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1)
What are homologous organs?
Organs with common origin having same or different functions.
Organs with different origins having same or different functions.
Organs with different origins, but having same functions.
Organs with different origins, but having different functions.
2)
What are analogous organs?
Organs with common origin having same or different functions.
Organs with different origins having same or different functions.
Organs with different origins, but having common functions.
Organs with different origins, but having different functions.
3)
Organs such as bat's wing, wings of birds, seal's flipper, forelimb of a horse, and human arm have a common underlying anatomy which was present in their last common ancestor, therefore, their forelimbs are _______________ organs.
Analogous
Homologous
Can be either an Analogous or Homologous
Neither an Analogous nor a Homologous
4)
The bones, humerus and radius ulna are present in the flipper of whale and the forelimb of a rabbit. What does this indicate?
Common ancestor
Common function
Common habitat
Common life style
5)
Tendril of pea is a modified leaf and is used for providing mechanical support for the plant. But in the case of barberry the modified leaves are meant for protection. Which kind of organs do these leaves represent?
They represent homologous organs in plants because they have common origin.
They represent analogous organs in plants because they have common functions.
They represent homologous organs in plants because they have common functions.
They represent analogous organs in plants because they have common origin.
6)
Which group of the following contains homologous forelimbs?
Bat's wing, wings of birds and seal’s flipper.
Forelimb of a horse, human arm and paw of cat.
Flipper of whale, neck of horse, wing of bat.
Forelimb of a bat, human arm and seal’s flipper.
7)
The phylloclade of Opuntia plant is a _____________________.
Leaf of a plant
Modified stem which helps in photosynthesis like a leaf
Root of the plant
Flower of the plant
8)
The potato and sweet potato show similar characteristics, but different origins. What does this indicate?
Analogous
Homologous
Can be either an Analogous or Homologous
Neither an Analogous nor a Homologous
9)
The wings of insects originate from inner or outer surface of the insects body. Feathers of birds originated from forelimbs and wings of bats originated from both fore limb and membranous skin of the abdomen. Which of the following statements is true regarding the wings of the given specimen?
Analogous
Homologous
Can be either an Analogous or Homologous
Neither an Analogous nor a Homologous
10)
Potato is a modified stem, whereas sweet potato is a modified root. Why are they called analogous structures?
They have a common function to store food.
They have common function to help in photosynthesis.
They have common function to give support to the stem of the plant.
They have a common function to store water.
