Question

QUESTION 57 Imagine a community with a biodiversity of 25 species. One species is hunted to extinction by humans, after which the community is protected from any human intervention. However, a year later, you find that biodiversity is down to 5 species. What does this tell you about the species that went extinct due to hunting? It must have been a producer. It was a virulent pathogen. It was a weak competitor. It may have been a keystone species. It must have been a predator. 1 points

QUESTION 58 In plants, the _______________ are female structures. archegonia and ovule antheridia pollen grains stamens stamen and pollen antheridia and archegonia 1 points QUESTION 59 Which of the following was not one of the observations or inferences that Darwin made relating to his theory of evolution by natural selection? Traits are inherited by offspring if the traits are heritable. Individuals with advantageous traits are more likely to survive and reproduce. All species are capable of reproducing more offspring than the environment can support. Traits that an individual develops during their lifetime are inherited by their offspring. The traits within a population vary. 1 points

QUESTION 60 Which plant tissues are diploid? microspores megaspores gametophyte zygote

Answer 1

57. these extinct species were key stone species these were extinct due to their large in size large predaters do not resist hunting and may not survive competition. because of virulence pathogenicity they are more prone to hunting. because of its keytone nature other species may get extinct and also largely affected. as it was predator and also virulent thats why it deleted other species also.

58. archegonia and ovule are female structures. Megagametophytes produce archegonia (lost in some groups like flowering plants), which produce egg cells. After fertilization, ovule contains a diploid zygote which are part of female structures.

59. Traits are inherited by offspring if the traits are heritable. is not an observation of drawin

60. the haploid gem cells from male and female plants fertilised in female structure and forms diploid strutcure zygote. and all others are haploid.

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