Asexual and sexual reproduction

Several new plants are developing from parts of a plant that have broken off and then taken root in the soil. Which statement is true about these new plants once they are mature?

May/June 2016

The statements E to K concern the process of reproduction. Table 5.1 compares sexual reproduction with asexual reproduction.

May/June 2017

The diagram shows part of a Bryophyllum plant. Which option gives the clearest description of the way the new plants are formed?

May/June 2021

A gardener cultivates a species of dahlia, which is a flowering plant. Each year, he picks his strongest plants and takes cuttings from them to produce new plants.

May/June 2022

Which characteristic is associated with asexual reproduction in a plant?

May/June 2023

Which statement is correct for organisms that reproduce asexually?

May/June 2023

State which type of reproduction is used to grow pineapple plants in this way.

May/June 2024

Outline the processes of mitosis and meiosis, including where each takes place.

Oct/Nov 2015

Small fragments of root tissue are removed from an oil palm tree and put into a nutrient medium. Each fragment develops into a new oil palm tree. Which type of reproduction is this, and how do the genotypes of the new trees compare with that of the parent tree?

Oct/Nov 2016

Removing stagnant water is one way of controlling the malarial mosquito. Which stages in the mosquito life cycle are eliminated by this method?

Oct/Nov 2018

State one benefit of sexual reproduction compared with asexual reproduction.

Oct/Nov 2018

The diagram presents the parts of a plant that are above the ground.

Oct/Nov 2018

Explain why plants grown commercially are often reproduced by asexual methods.

Oct/Nov 2020

One way to control the malarial mosquito is to drain stagnant water. Which stages of the mosquito life cycle are affected by this method?

Oct/Nov 2021

Which statement accurately describes the offspring produced through asexual reproduction?

Oct/Nov 2021

Removing stagnant water is one way of controlling the mosquito that spreads malaria. Which parts of the mosquito life cycle are affected by this method?

Oct/Nov 2021

Sperm cells and pollen grains both play a part in sexual reproduction. Compare the functions of a sperm cell and a pollen grain, and describe how the structure of each is adapted to its function.

Oct/Nov 2021

A gardener has two sets of strawberry plants, named X and Y. They are cultivated to maturity in identical conditions. He records several observations and decides that the plants in group X were formed asexually and those in group Y were raised from seeds. Which observations provide the strongest support for his conclusions?

Oct/Nov 2022

The diagram illustrates how many carrot plants can be grown from small sections of carrot root. Which row is correct for this method of plant reproduction?

Oct/Nov 2023

A plant contains 20 chromosomes in its leaf cells. It reproduces sexually and also asexually. What is the correct chromosome number in the gametes and in the cells involved in asexual reproduction?

Oct/Nov 2023

What are the characteristics of sexual reproduction? 1. fusion between diploid nuclei 2. fusion between haploid nuclei 3. formation of clones 4. formation of genetically different offspring

Oct/Nov 2023

State one feature of asexual reproduction in plants.

Oct/Nov 2024

Aphids are tiny insects that obtain nutrients from plants by drawing fluids out of plant cells. The number of aphids feeding on a bean plant rises very quickly. Which row shows a pair of factors that accounts for this rapid increase?

Oct/Nov 2024

An experiment is arranged to find out the conditions needed for seeds to germinate. In which flask will the seeds germinate first?

Oct/Nov 2025

Lemna is a tiny green plant that floats on the water surface in ponds and lakes. It is made up of leaves that float and a root that trails down into the water. Fig. 2.1 shows one plant with four leaves. D and E show the maximum length of two of the plant's leaves. Fig. 2.1 labels: plant leaves on surface of water; root; magnification \times12. This plant population increases because each plant splits into two smaller plants. These smaller plants then produce new leaves and divide again. Some students chose to investigate Lemna growth. They put six plants in a small beaker containing nutrients in distilled water (nutrient solution). A lamp was used to give constant light. The students decided to measure growth by counting the total number of leaves at the same time each day. At the beginning of the investigation there were 16 leaves in total on the plants. Fig. 2.2 shows the beaker viewed from above on day 4. Table 2.1: Time/days and total number of leaves: 0 → 16 2 → 20 3 → 29 4 → [blank] 5 → 55 6 → 83 7 → 91

Oct/Nov 2025