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TLS Online TPP Program

#Question id: 4605

Over long periods of time, many cave-dwelling organisms have lost their eyes. Tapeworms have lost their digestive systems. Whales have lost their hind limbs. How can natural selection account for these losses?

#XL - T Zoology

  1. Natural selection cannot account for losses, but accounts only for new structures and functions.

  2. Natural selection accounts for these losses by the principle of use and disuse.

  3. Under particular circumstances that persisted for long periods, each of these structures presented greater costs than benefits.

  4. The ancestors of these organisms experienced harmful mutations that forced them to lose these structures.

More Questions
TLS Online TPP Program

#Question id: 511

#XL - S Microbiology

Which of the following enzymatic reactions are control points for glycolysis?
TLS Online TPP Program

#Question id: 5099

#XL - T Zoology

Which of the following is common to the development of birds and mammals?
TLS Online TPP Program

#Question id: 2363

#XL - Q Biochemistry

Cells lining the respiratory tract contain ______ that help keep the lungs clear of particles.
TLS Online TPP Program

#Question id: 19564

#XL - P Chemistry

In a borax bead test, which compound is formed?
TLS Online TPP Program

#Question id: 10236

#XL - T Zoology

Following figure represent fundamental and realized nich of species P and Q in gradient of temperature along sea shore. which of the following statement are correct? 


A) Fundamental niche of species P is greater than its realized nich

 B) Fundamental niche of species Q is greater than its realized nich

 C) Species Q is strong competitor than species P

 D) There is no effect on spaced occupied by Q in the presence or absence of species P