Question

(a) Fig. 1.1 is a diagram of a wind‑pollinated flower.

     

    (i) State which letter in Fig. 1.1 identifies the part where:
         fertilisation occurs ………………….
         pollen is produced. ………………….

    (ii) Describe two visible pieces of evidence in Fig. 1.1 that show the flower is adapted for wind‑pollination.

(b) Fig. 1.2 is a photomicrograph of pollen from an insect‑pollinated flower

       

Describe two ways the appearance of pollen from a wind‑pollinated flower is different from the pollen from an insect‑pollinated flower.

(c) Some plants can reproduce asexually and sexually.
     (i) State two advantages of sexual reproduction compared to asexual reproduction in plants.

     (ii) Suggest a situation where asexual reproduction is more useful to a plant in the wild than sexual reproduction. 

(d) Reproduction is one of the characteristics of living organisms.
      State two other characteristics of living organisms.

▶️Answer/Explanation

Ans : 

1(a)(i) C ;
              E ;

1(a)(ii) any two from:
               feathery stigma ;
               small / no, petals ;
               anther hangs outside (the, flower / petals) ;
               stigma hangs outside (the, flower / petals) ;

1(b) smooth(er) / not spiky ;
         small(er) ;

1(c)(i) any two from:
              genetic diversity ;
             disease unlikely to wipe out all the plants ;
             able to adapt to changes in the environment ;
             allows, natural selection / evolution / adaptation ;

1(c)(ii) when the plant becomes isolated (from other plants) / when there is a shortage of pollinators / lack of other plants ;

1(d) any two from:
         movement ;
         respiration ;
         sensitivity ;
         growth ;
         excretion ;
         nutrition ;