दना चाहत है। इस विषय में अपने प्राचार्य
को एक पत्र लिखिए।
विद्यालय में रक्तदान शिविर लग रहा है। आप भी अपना रक्त देने के अतिरिक्त कुछ सहयोग देना चाहते हैं। प्रधानाचार्य
को पत्र लिखिए।
[CBSE 2012]
विद्यालय में दसवीं कक्षा की परीक्षा मार्त नितिन
Answers
Explanation:
Predators may actively search for or pursue prey or wait for it, often concealed. When prey is detected, the predator assesses whether to attack it. This may involve ambush or pursuit predation, sometimes after stalking the prey. If the attack is successful, the predator kills the prey, removes any inedible parts like the shell or spines, and eats it.
Predators are adapted and often highly specialized for hunting, with acute senses such as vision, hearing, or smell. Many predatory animals, both vertebrate and invertebrate, have sharp claws or jaws to grip, kill, and cut up their prey. Other adaptations include stealth and aggressive mimicry that improve hunting efficiency.
Predation has a powerful selective effect on prey, and the prey develop antipredator adaptations such as warning coloration, alarm calls and other signals, camouflage, mimicry of well-defended species, and defensive spines and chemicals. Sometimes predator and prey find themselves in an evolutionary arms race, a cycle of adaptations and counter-adaptations. Predation has been a major driver of evolution since at least the Cambrian period.