White-breasted nuthatches and Downy woodpeckers both eat insects that hide in the furrows of bark in hardwood trees. The Downy woodpecker searches for insects by hunting from the bottom of the tree trunk to the top, while the White-breasted nuthatch searches from the top of the trunk down. These hunting behaviours best illustrate which of the following ecological concepts?

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#Question id: 28225

#Unit 5. Developmental Biology

stem cell produce a limited set of specialized cells that are characteristic of a particular tissue. These cells plays a vital role in tissue repair due to injury or disease,  termed as

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#Question id: 7540

#General Aptitude

Two trains of lengths 200m and 320m pass each other with constant speeds on parallel tracks in opposite directions. The drivers and guards are at extremities of the trains. The time gap between the drives passing each other and first driver-guard pair passing each other is 25 s. How much later will other driver-guard pair pass by?

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#Question id: 11166

#Unit 2. Cellular Organization

Which of the following fatty acids are linked to membrane proteins?

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#Question id: 21123

#Unit 12. Applied Biology

Which one of the following is a detection device or transducer for nucleic acid biological material?

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#Question id: 22972

#Unit 7. System Physiology – Animal

Parathyroid hormone stimulates calcitriol production in the kidney by increasing the synthesis of